Question

Solve by the elimination method. 8x-9y=8.5, 7y-2x=-4.5

Answer 1

first you want to set the up top each other and decide which variable you want to cancel out

Answer 2

8x-9y=8.5
7y-2x=-4.5

Answer 3

The first one?

Answer 4

yes
8x-9y=8.5
-2x+7y=-4.5

Answer 5

what do you do next?

Answer 6

assuming we want to get rid of x we multpliy the first equation by -2 and the second equation by 8 thats the whole equation on both sides

Answer 7

so it would be -16x-18y=-17, 56y-126x=-36?

Answer 8

@Jasmine2012

Answer 9

no it would be -16x+18y=-17
-16x-56y=-36

Answer 10

then add them together to get rid of the x's

Answer 11

then it would be y=-53/74

Answer 12

38/53