Question

Use the elimination method to solve the system.


5x + 8y = –29
7x – 2y = –67

Answer 1

5x + 8y = –29
7x – 2y = –67 (multiply by 4)

5x + 8y = –29
28x-8y=-268
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33x=-297
x=-297/33
x=-9

Answer 2

7x – 2y = –67

Put the value of x in the original 2 equation
7(-9)-2y=-67
-63-2y=-67
-2y=-67+63
-2y=-4
y=-4/-2
y=4/2
y=2


So x=-9 and y =2 answer.