Solve this system of equations using subtraction
4x - 4y = -4
4x + y = 21
Answers
Answered by
0
Answer:
x = 4
y = 5
hope you find this helpful.
Answered by
0
Answer:
line 1: 4x +4y =12 or x+y=3 or y=3-x
line 2: x-7y=-21
line2...x-7*(3-x)=-21
x+7x -21 =-21
8x=0
x=0
y=3-x =3
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