Tuesday

October 21, 2014

October 21, 2014

Posted by **lisa** on Sunday, June 30, 2013 at 4:27pm.

9y-8x=44

substitution method

- math -
**Ms. Sue**, Sunday, June 30, 2013 at 4:47pmx-5y=-21

9y-8x=44

x = 5y - 21

9y - 8(5y - 21) = 44

9y - 40y + 168 = 44

-31y = 44 - 168

-31y = -124

y = 4

Take it from there.

- math -
**Kuai**, Sunday, June 30, 2013 at 4:54pmx = 5y -21

9y-8(5y-21) = 44

9y -40y +168 = 44

-31y + 168 = 44

-31y + 168 -168 = 44 -168

-31y = -124

y = 4

x = 5(4)-21 = -1

(-1, 4)

**Answer this Question**

**Related Questions**

Math - 1. Explain the advantages and disadvantages of both the substitution ...

math substitution method - use the substitution method to solve 7x+5y=-26 x=28-...

Algerbra 1 substitution method - im really confused about this question: 2x-3y=...

algebra - use the Substitution Method. Please give it a try. y = 3x + 4 5x + 3y...

substitution method - Solve by substitution method please help me solve this. I ...

Algebra - Solving system of linear equations by using the apropiate method name ...

MATH - SYSTEMS OF EQUATIONS CAN BE SOLVED BY GRAPHING OR BY USING SUBSTITUTION ...

math - Systems of equations can be solved by graphing or by using substitution ...

math - SYSTEMS OF EQUATIONS CAN BE SOLVED BY GRAPHING OR BY USING SUBSTITUTION ...

Math - 12x+4y= 22 and 3x-8y= -10 What are the coordinates of x and y? Use the ...