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SOVA2 [1]
3 years ago
15

Solve the system of equations. - 5x + 2y = 9 Y = 78 =

Mathematics
2 answers:
Oksi-84 [34.3K]3 years ago
7 0

Answer:

x = 147/5 and y = 78

Step-by-step explanation:

First solve by substitution and put 78 into y in -5x + 2y = 9 so you get 147/5

then plug 147/5 into x and find y

skad [1K]3 years ago
7 0

Answer:

x = -147/5 , y = 78

Step-by-step explanation:

- 5x + 2y = 9

Y = 78

Substitute the second equation into the first

-5x + 2(78) = 9

-5x +156 = 9

Subtract 156 from each side

-5x+156-156 = 9-156

-5x =147

Divide each side by -5

-5x/-5 =147/-5

x = -147/5

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