Saturday

October 25, 2014

October 25, 2014

Posted by **Isis** on Monday, March 25, 2013 at 6:01pm.

Step 1: Multiply a number by 6 and then subtract by 4.

Step 2: Divide the result by 2

Step 3: Add 3 to the result from the second step.

If Delia's final answer is 19, What was the original number?

PLEASE HELP ME!!!

- Pre-calculus. -
**Reiny**, Monday, March 25, 2013 at 6:28pmsuppose you pick x

1: 6x - 4

2: (6x-4)/2 = 3x-2

then 3x-2 = 19

3x = 21

x = 7

Delia picked 7

or you can just do everything with inverse operations on reverse order

last thing she did was divide by 2

so first thing we do is multiply by 2

19x2 = 38

the middle thing she did was subtract 4, so we will add 4

38+4 =42

the first thing she did was to multiply be 6, so the last thing we will do is divide by 6

42÷6 = 7

How about that ???

- Pre-calculus. -
**Isis**, Monday, March 25, 2013 at 7:47pmi guess it will help.. thank you :)

**Answer this Question**

**Related Questions**

math - 3 divided by 7 as a fraction of delia is 48, use variable d to represent ...

pre algebra - solve the equation step by step.list each step along with the ...

ALGEBRA HELP - When solving the equation, what property was used to go from step...

Quick math help - In which step below does a mistake first appear in simplifying...

Pre algebra - A number multiplied by itself and then by itself again gives -1,...

Algebra help - f(x)=x^3-4x^2-x+4 How do I find the x-intercept for this? This is...

math - Multiply step by step: 20.45 x 60.34= this may be easy calculating but ...

algebra - Solve. x/9-1/7=26/63 STEP 1: The LCM is _________ To clear ...

CHEM - The decomposition of nitrogen dioxide 2NO2-->2NO+O2 occurs in a two-...

MATH - 7/10 of Delia's money is equal to 1/5 of Sarah's money. They have $225 ...