Evaluate
\frac{7x+4}{7x+2}
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\frac{7x+4}{7x+2}
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\frac{5x+1+2x+3}{7x+2}
Since \frac{5x+1}{7x+2} and \frac{2x+3}{7x+2} have the same denominator, add them by adding their numerators.
\frac{7x+4}{7x+2}
Combine like terms in 5x+1+2x+3.
\frac{5x+1+2x+3}{7x+2}
Since \frac{5x+1}{7x+2} and \frac{2x+3}{7x+2} have the same denominator, add them by adding their numerators.
\frac{7x+4}{7x+2}
Combine like terms in 5x+1+2x+3.
Examples
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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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