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3x+4x=8-x 7x=8-x (combine like terms [the "x's" in this equation])
7x+x=8 (add x to each side to get x on only one side)
8x=8 (combine like terms)
8x/8=8/8 (divide each side by 8)
x=1 (simplify)

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14y ago
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Q: How do you solve 3x plus 4x equals 8-x?
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