3 years ago

If line lis parallel to line m, find the value of x and y. (please help taking a test)

Mathematics

1 answer:

castortr0y [4]3 years ago

3 0

Answer:

x=8 and y=21

Step-by-step explanation:

12x-28=7x+12 (the 2 angles are equivalent)

12x-7x=12+28

5x=40

x=8

9y-77 + 12x-28 =180 (the sum of those 2 angles is a flat angle (180°))

9y-77+12*8-28=180

9y=180+28+77-96

9y=189

y=21

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