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3\left(9\times 7+3\right)=1
Multiply both sides of the equation by 21, the least common multiple of 7,21.
3\left(63+3\right)=1
Multiply 9 and 7 to get 63.
3\times 66=1
Add 63 and 3 to get 66.
198=1
Multiply 3 and 66 to get 198.
\text{false}
Compare 198 and 1.
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Linear equation
y = 3x + 4
Arithmetic
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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
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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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