Seudónimo Seudónimo

30-09-2016
Mathematics

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3x + 8y = 85 7x -2y =33 (solve the following equations)

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thechiiquita23 thechiiquita23

30-09-2016

what is it that you are looking for ?
x or y ?

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aditilagad aditilagad

30-09-2016

3x+8y=85
7x-2y=33

4(7x-2y=33)
28x-8y=132
+3x+8y=85

31x=217
__ ___
31 31

X= 7

7(7)-2y=33
49-2y=33
-2y=-16
______
-2

Y=8

(7,8)

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