Solve the system by addition or substitution. 20x – 4y = –8 y = 2 + 5x?

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I get confused on this.

2007-10-14 11:18:14 · 2 answers · asked by Mo Girl 1 in Science & Mathematics ➔ Mathematics

20x - 4y = -8y
20x = -4y
y = -5x

5x + 2 = -8y
5x + 2 = 40x
35x = 2
x = 2/35
y = -2/7

2007-10-14 11:30:26 · answer #1 · answered by norman 7 · 0⤊ 0⤋

i dont know what your suppose to solve for but i got....
x= 2/15
y= 1/2

2007-10-14 11:28:59 · answer #2 · answered by Rondo 4 · 0⤊ 0⤋