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\left(7\times 2+1\right)\times 2=30
Multiply both sides of the equation by 2.
\left(14+1\right)\times 2=30
Multiply 7 and 2 to get 14.
15\times 2=30
Add 14 and 1 to get 15.
30=30
Multiply 15 and 2 to get 30.
\text{true}
Compare 30 and 30.
Examples
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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
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Limits
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