mind helping me with this? 5x-8=13+7(x-3)?

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2007-12-20 11:01:33 · 4 answers · asked by Kimberly M 1 in Science & Mathematics ➔ Mathematics

first distribute
5x-8=13+7x-21
combine like terms
5x-8=7x-8
add 8 to both sides
5x+0=7x
subtract the 5x
0=2x
divide and you'll get
x=0

2007-12-20 11:06:53 · answer #1 · answered by sirdumbalot8 3 · 0⤊ 0⤋

5x-8=13+7x-21
21-13-8=7x-5x
0=2x
x=0

2007-12-20 19:06:41 · answer #2 · answered by Omega 3 · 0⤊ 0⤋

5x-8=13+7x-21
5x-7x-8=-8+7x-7x
-2x=-8
-2x/-2=-8/-2
x=4

2007-12-20 19:04:56 · answer #3 · answered by Dave aka Spider Monkey 7 · 0⤊ 2⤋

11.5

2007-12-20 19:07:04 · answer #4 · answered by Anonymous · 0⤊ 1⤋