pabo567 pabo567

09-11-2018
Mathematics

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7x + 7y = -21 also 48x -8y= 136 using the substitution method to find X and Y

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jordenzepeda1234 jordenzepeda1234

09-11-2018

7x + 7y = -21

48x - 8y = 136 This is where you find a common sum.

8(7x + 7y = -21) ex: 7 and 8

7(48x - 8y = 136)

56x + 56y = -168 Multiply it out

336x -56y = 952

392x = 784 Divide/Simplify

x = 2

Now substitute to find Y. I hope this helped!

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