Solve for x
x=-2
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3x-34+x=-42
Add x to both sides.
4x-34=-42
Combine 3x and x to get 4x.
4x=-42+34
Add 34 to both sides.
4x=-8
Add -42 and 34 to get -8.
x=\frac{-8}{4}
Divide both sides by 4.
x=-2
Divide -8 by 4 to get -2.
Examples
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Linear equation
y = 3x + 4
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Matrix
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Simultaneous equation
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
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Limits
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