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(5.02) Solve the system of equations.

-7x - 2y = -13
x - 2y = 11

Part A: Use the substitution method to solve the system. Show each step of the process to receive full credit. Write the solution as an ordered pair.

Part B: Use the elimination method to solve the system. Show each step of the process to receive full credit. Write the solution as an ordered pair.

Respuesta :

Yang100

Answer:

x=3, y=-4. (3, -4).

Step-by-step explanation:

-7x-2y=-13

x-2y=11

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x=2y+11

-7(2y+11)-2y=-13

-14y-77-2y=-13

-16y=-13+77

-16y=64

y=64/-16

y=-4

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x-2(-4)=11

x+8=11

x=11-8

x=3

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