Evaluate
-\frac{17}{12}+\frac{15}{x}
Factor
-\frac{\frac{1}{12}\left(17x-180\right)}{x}
Graph
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\frac{15\times 12}{12x}-\frac{17x}{12x}
To add or subtract expressions, expand them to make their denominators the same. Least common multiple of x and 12 is 12x. Multiply \frac{15}{x} times \frac{12}{12}. Multiply \frac{17}{12} times \frac{x}{x}.
\frac{15\times 12-17x}{12x}
Since \frac{15\times 12}{12x} and \frac{17x}{12x} have the same denominator, subtract them by subtracting their numerators.
\frac{180-17x}{12x}
Do the multiplications in 15\times 12-17x.
Examples
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Matrix
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Simultaneous equation
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Integration
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Limits
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