Solve for x
x=-2
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3x+7+x=-1
Add x to both sides.
4x+7=-1
Combine 3x and x to get 4x.
4x=-1-7
Subtract 7 from both sides.
4x=-8
Subtract 7 from -1 to get -8.
x=\frac{-8}{4}
Divide both sides by 4.
x=-2
Divide -8 by 4 to get -2.
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Matrix
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Limits
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