barthkid48 barthkid48
  • 24-11-2022
  • Mathematics
contestada

Solve the system by substitution.
y = -6x +8
7x + 2y = -14

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kennethkwakye918
kennethkwakye918 kennethkwakye918
  • 24-11-2022

Answer:

y=-28 and x=6

Step-by-step explanation:

y=-6x+8...... eqn(1)

7x+2y=-14.......eqn(2)

Two times equation (1)

2y=-12x+16..... eqn(3)

2y=-14-7x........ eqn (2)

eqn(3) - eqn(2)

0=-5x+30

5x=30

x=6

from eqn (1) where x=6

y=-6(6)+8

y= -36+8

y=-28

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