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algebra
I need a step by step explanation on how to add these two equations 2x+3y=1 5x+3y=16 Subtract the first equation from the second. (Subtract left and right sides separately). This gives you 3x = 15 Then divide both sides by 3. x =
asked by Tony on March 20, 2007 
Pre Cal.Check my work?
Solve the system of equations: x  y  z = 2; x + 2y  2z = 3; 3x  2y  4z = 5? well, you have: 1 xyz=2 2 x+2y2z=3 3 3x2y4z=5 multiply both sides of the equation 1 by 2: xyz=2 ===> 2x2y2z=4 add this by equation 2:
asked by David on March 30, 2009 
Algebra
I am re posting this for fear that it was overlooked earlier. I have also decided to show my work in the hopes of preventing any issues that might arise. Solve the absolute value equation. I y+3 I +5=2y Would the solutions be 8=y
asked by Anonymous on October 13, 2009 
mathcalculus
so with this one i do the same thing multiplying what inside absolute value bracket bar with what outside? 2x82 = 4x so that start me off as 4x+16 = 4x or 4x16 = 4x. solve equation x^22x6 = 4 this nothing to do with
asked by Shreya on January 17, 2012 
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how would i find an equation of a line that goes through points(1,6) and (3,10)?? thanks A straight line is y=mx+b Substitute the points to make two equations. 6=m(1)+b 10=m(3)+b Two equations; two unknowns, m and b. Solve for m
asked by jasmine on December 22, 2006 
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I need help solving the following simultaneous equations, for the values of Vo and a: 1.4 = Vo e^32a 4 = Vo e^6a I've never come across simultaneous equations like this (e is the base of natural logarithms, so perhaps taking
asked by Stuart on May 13, 2007 
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You are given two equations which are both true, and you are asked to solve for both x and y. You plan to solve this set of equations by substituting part of one equation into the other so you end up with an equation that contains
asked by Jen on October 7, 2008 
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Solve the system of equations by substitution and explain all your steps in words: 3x + y = 12 x = y − 8 . Is this a good way to explain this problem? Step 1: Since X is given to us. We can plug it into the xvalue in the first
asked by Josh on March 13, 2019 
Int Algebra
The difference of two numbers is 7. The sum of the numbers is 1. What are the numbers? I've come up with the following equations: xy=7 and x+y=1. I can't seem to solve because there are no numbers on the left side of the
asked by Rose Mata on January 26, 2007 
MATH PLEASE CHECK IT!!2
m2/m5*m+5/m2=1 If your problem is this: (m  2)/(m  5) * (m + 5)/(m  2) = 1 (m  2) cancels out in both the numerator and denominator on the lefthand side since you are multiplying. That leaves us with this: (m + 5)/(m 
asked by Margie on February 18, 2007