Solve for x
x=-6.5
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15-5x+2x+4x-3=2+3.5
Add 7 and 8 to get 15.
15-3x+4x-3=2+3.5
Combine -5x and 2x to get -3x.
15+x-3=2+3.5
Combine -3x and 4x to get x.
12+x=2+3.5
Subtract 3 from 15 to get 12.
12+x=5.5
Add 2 and 3.5 to get 5.5.
x=5.5-12
Subtract 12 from both sides.
x=-6.5
Subtract 12 from 5.5 to get -6.5.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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Linear equation
y = 3x + 4
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Matrix
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Simultaneous equation
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
Differentiation
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Limits
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