landmar04
landmar04 landmar04
  • 29-11-2017
  • Mathematics
contestada

solve the system by the substitution. 8x-3y=-22 y=5x+19

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Piinoy
Piinoy Piinoy
  • 29-11-2017
Substitute y in 8x - 3y = -22.

8x - 3(5x + 19) = -22
Simplify.
8x - 15x - 57 = -22
Simplify.
-7x - 57 = -22
Add 57 to both sides.
-7x = 35
Divide both sides by -7.
x = -5

Substitute x in y = 5x + 19.

y = 5(-5) + 19
y = -25 + 19
y = -6

The solution is (-5, -6).
Answer Link
speresenko
speresenko speresenko
  • 29-11-2017
The solution is (-5, -6).
I hope I helped ^ - ^
Answer Link

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