math

Consider the sequence of steps to solve the equation:
5(x - 3) = 7x 2
Step 1 ⇒ 10(x - 3) = 7x
Step 2 ⇒ 10x - 30 = 7x
Step 3 ⇒ 3x - 30 = 0
Step 4 ⇒ 3x = 30
Step 5 ⇒ x = 10
Identify the property of equality which yields Step 5.
I'm thinking division

  1. 👍 0
  2. 👎 0
  3. 👁 596
  1. correct

  2. The 1st problem is that the solution is not correct
    The 2nd problem is that you seem to be using x as a variable on the left side, and as a multiplication sign on the right.
    or is 7x2 supposed to say 7x^2 ?

    In step #1, you multiplied the left side by 2, but divided the right side by 2

    5(x - 3) = 7x 2
    5x + 15 = 14
    5x = -1
    x = -1/5

Respond to this Question

First Name

Your Response

Similar Questions

  1. algebra

    Below are the steps to solve an equation: Step 1: |x − 2| + 3 = 7 Step 2: |x − 2| = 7 − 3 Step 3: |x − 2| = 4 Which of the following is a correct next step to solve the equation? x + 2 = −4 −x − 2 = 4 x + 2 = 4 x −

    asked by oscar on September 7, 2015
  2. math

    An equation and the steps to solve it are shown below: 3x − one over two (8x − 2) = 4 Step 1: 3x − 4x + 1 = 4 Step 2: x + 1 = 4 Step 3: x + 1 − 1 = 4 − 1 Step 4: x = 3 Which step was the error made and why? Step 1,

    asked by oscar on September 4, 2015
  3. chemistry

    The reaction: A + 3 B = D + F was studied and the following mechanism was finally determined A + B = C (fast) C + B = D + E (slow) E + B = F (very fast) The step with largest activation energy is a. the first step b. the second

    asked by bob on February 24, 2012
  4. Chem 2

    Propane (C3H8) burns in oxygen to produce carbon dioxide and water vapor. The balance equation for this reaction is C3H8 + 5O2 ----> 4H20 + 3CO2. What volume of carbon dioxide id produced when 2.8 L of oxygen are consumed? Here

    asked by Katie on April 27, 2007
  5. Chemistry - Rate Determining Step

    The rate law for the reaction 2NO (g) + Cl2 (g) -> 2NOCl (g) is given by rate = k[NO][Cl2] A mechanism involving the following steps has been proposed for the reaction: NO (g) + Cl2 (g) -> NOCl2 (g) NOCl2 (g) + NO (g) -> 2NOCl (g)

    asked by Christine on February 6, 2007
  1. Math - Another question to check, sorry... =/

    7. 72 is what percent of 480? Write and solve an equation to solve the problem. Step 1. First, I will write out the equation. part = percent x whole Step 2. Now, fill in the parts… 72 = p x 480 Step 3. I will simply divide 72 by

    asked by Lizzie on February 1, 2016
  2. MATH

    Adam was walking down the stairs at his work one day. Adam began on the top step and had already gone down seven steps when he saw Reanna on the ground floor beginning to come up the stairs. Reanna goes up two steps for every one

    asked by Jessica on February 6, 2011
  3. MATH

    Write a two-step equation that needs the steps of addition then multiplication in order to be solved, and then solve it. Show your work.

    asked by leya on May 24, 2012
  4. Grade 9 Algebra Question 2

    2. PYRAMIDS When climbing an ancient Mayan pyramid, the Johnson family noticed that the bottom of each side of the pyramid started with 50 large stones. The next step up had 45 large stones, the next step up had 40 stones, and so

    asked by Jab on October 6, 2011
  5. CHEM

    The decomposition of nitrogen dioxide 2NO2-->2NO+O2 occurs in a two-step sequence at elevated tempatures. the first step lis NO2--> NO+O. predict a possible second step that, when combined with the first step, gives the complete

    asked by RAYRAY on May 16, 2011

You can view more similar questions or ask a new question.