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3 years ago

5. Solve this system of equations. 3x + 4y = 36 y = -x +8. please help meee3333............

Mathematics

1 answer:

Yanka [14]3 years ago

7 0

Answer:

x = -4 and y = 12

Step-by-step explanation:

Since you have y = -x + 8 you can substitute this into the first equation where y was so you have 3x + 4(-x + 8) = 36.

That way, there is only one variable and it is easier to solve.

3x + 4(-x + 8) = 36

3x -4x + 32 = 36

-x +32 = 36

-x = 4

x = -4

Plugging this into the equation y = -x +8,

y = -(-4) + 8

y = 4 + 8

y = 12

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5. Solve this system of equations. 3x + 4y = 36 y = -x +8. please help meee3333............​

5. Solve this system of equations. 3x + 4y = 36 y = -x +8. please help meee3333............