Solve for x
x=\frac{4}{5}=0.8
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20+2\left(3\times 2+1\right)x=24+\left(2\times 4+1\right)x
Multiply both sides of the equation by 4, the least common multiple of 2,4.
20+2\left(6+1\right)x=24+\left(2\times 4+1\right)x
Multiply 3 and 2 to get 6.
20+2\times 7x=24+\left(2\times 4+1\right)x
Add 6 and 1 to get 7.
20+14x=24+\left(2\times 4+1\right)x
Multiply 2 and 7 to get 14.
20+14x=24+\left(8+1\right)x
Multiply 2 and 4 to get 8.
20+14x=24+9x
Add 8 and 1 to get 9.
20+14x-9x=24
Subtract 9x from both sides.
20+5x=24
Combine 14x and -9x to get 5x.
5x=24-20
Subtract 20 from both sides.
5x=4
Subtract 20 from 24 to get 4.
x=\frac{4}{5}
Divide both sides by 5.
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4 \sin \theta \cos \theta = 2 \sin \theta
Linear equation
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
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}