Solve for x
x=4
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8x-4-7x=0
Subtract 7x from both sides.
x-4=0
Combine 8x and -7x to get x.
x=4
Add 4 to both sides. Anything plus zero gives itself.
Examples
Quadratic equation
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Linear equation
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Matrix
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Simultaneous equation
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Differentiation
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
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Limits
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