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  • 17-10-2020
  • Mathematics
contestada

solve by substitution
y = -21 – 4x
8x + 8y = -24

Respuesta :

shxrve shxrve
  • 17-10-2020
Answer:
x=-6
y=3

Explanation:
y=-4x-21
8x+8y=-24

y=-4x-21
8x+8(-4x-21)=-24

y=-4x-21
-24x-168=-24

y=-4x-21
x=-6

y=-4(-6)-21
x=-6

y=3
x=-6

(-6,3) this is in point form in case you need it
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