Solve for x
x = \frac{7}{2} = 3\frac{1}{2} = 3.5
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5x-x-2x=7
Combine x and 4x to get 5x.
4x-2x=7
Combine 5x and -x to get 4x.
2x=7
Combine 4x and -2x to get 2x.
x=\frac{7}{2}
Divide both sides by 2.
Examples
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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 ) }
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Limits
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