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blsea [12.9K]
2 years ago
15

У = - 2х +8 - 7 – бу = - 8 SUBSTITUTION

Mathematics
2 answers:
Sergio039 [100]2 years ago
8 0

Answer:

x = 8

y = -8

Step-by-step explanation:

1. у = - 2х +8

2. - 7x - бу = - 8

Substitute y in equation 2 using equation 1

-7x - 6(-2x+8) = -8

-7x -(-12x) - 48 = - 8

Two negatives = positive

-7x + 12x - 48 = -8

5x - 48 = - 8

Plus 48 on both sides

5x = 40

Isolate x by dividing both sides by 5

x = 8

Using the value of x, find what y is.

y = -2(8) + 8

y = -16 + 8

y = -8

Hope this helps :)

Have an awesome day!

melamori03 [73]2 years ago
5 0

Answer:

ur missing a x in the equation

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