Friday

August 29, 2014

August 29, 2014

Posted by **Hanad** on Saturday, December 7, 2013 at 12:15am.

2x-5x=-8

-3x-2y=-26

- Math -
**Reiny**, Saturday, December 7, 2013 at 12:28amDid you mean 2x - 5y = -8 for the first one ?

I will assume that is what you meant:

Personally I would not use substitution, but ....

from the 2nd

26-3x = 2y

(26-3x)/2 = y

into the 1st:

2x - 5(26-3x)/2 = -8

times 2 to get rid of that fraction ...

4x - 5(26-3x) = -16

4x - 130 + 15x = -16

19x = 114

x = 6

then y = (26-18)/2 = 4

x = 6 , y = 4

**Related Questions**

maths - solve the following simultaneous equation: 5x+2y=29 x-y=-4 2x-y=-1 3x-y=...

alg 2 - 2 questions: 1. Find "a" if (-3,7) is a solution of 2x+ay=26 2. solve ...

Algebra 2 - 2 questions: 1. Find "a" if (=3,7) is a solution of 2x+ay=26 2. ...

Math Homework - Hello! I need help with these math questions, thanks! :) 1.) ...

HELP! - The problem using elimination/substitution methods what is the solution ...

Math - how do you solve this by substitution: step by step 1. 5x-y=16 5x+2y=13 2...

Math help - How do you do these questions, I have all my steps done until the ...

Math - How do you do these questions, I have all my steps until the last one: 2x...

Math - Can anyone help work these problumns out step by step? 11x-37=x+23 10p-26...

Math - How do you do these questions, I have all my steps done until the last ...