Solve for x
x=36
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72+3x=2\times 2x+36
Multiply both sides of the equation by 18, the least common multiple of 6,9.
72+3x=4x+36
Multiply 2 and 2 to get 4.
72+3x-4x=36
Subtract 4x from both sides.
72-x=36
Combine 3x and -4x to get -x.
-x=36-72
Subtract 72 from both sides.
-x=-36
Subtract 72 from 36 to get -36.
x=36
Multiply both sides by -1.
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y = 3x + 4
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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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