marissalwilliams3
29.01.2020 •
Mathematics
How do you solve substitution problems in pre algebra
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Ответ:
Ответ:
4x=-64y
Divide by 4 on each side and get x=-8y
Plug in -8y for x in the other equation and solve for y
2(-8y)+8y=-8
-16y+8y=-8
-8y=-8
y=1
Plug in y to original equation 2x+8y=-8 to find x
2x+8(1)=-8
2x+8=-8
Subtract 8 and get 2x=-16
And solve for x so x=-8
Coordinates: (-8,1)
Ответ:
HJ
Step-by-step explanation:
it is what it is