Solve for x
x=\frac{3}{8}=0.375
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9x-3=9x-8x
Combine 7x and 2x to get 9x.
9x-3=x
Combine 9x and -8x to get x.
9x-3-x=0
Subtract x from both sides.
8x-3=0
Combine 9x and -x to get 8x.
8x=3
Add 3 to both sides. Anything plus zero gives itself.
x=\frac{3}{8}
Divide both sides by 8.
Examples
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Linear equation
y = 3x + 4
Arithmetic
699 * 533
Matrix
\left[ \begin{array} { l l } { 2 } & { 3 } \\ { 5 } & { 4 } \end{array} \right] \left[ \begin{array} { l l l } { 2 } & { 0 } & { 3 } \\ { -1 } & { 1 } & { 5 } \end{array} \right]
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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