Solve for x
x=5
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1x+2=3\times 2+1
Multiply both sides of the equation by 2.
1x+2=6+1
Multiply 3 and 2 to get 6.
1x+2=7
Add 6 and 1 to get 7.
1x=7-2
Subtract 2 from both sides.
1x=5
Subtract 2 from 7 to get 5.
x=5
Reorder the terms.
Examples
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4 \sin \theta \cos \theta = 2 \sin \theta
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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