Evaluate
\frac{21x}{4}-\frac{y}{7}
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\frac{21x}{4}-\frac{y}{7}
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6x-y-\frac{3}{4}x-\left(-\frac{6}{7}y\right)
To find the opposite of \frac{3}{4}x-\frac{6}{7}y, find the opposite of each term.
6x-y-\frac{3}{4}x+\frac{6}{7}y
The opposite of -\frac{6}{7}y is \frac{6}{7}y.
\frac{21}{4}x-y+\frac{6}{7}y
Combine 6x and -\frac{3}{4}x to get \frac{21}{4}x.
\frac{21}{4}x-\frac{1}{7}y
Combine -y and \frac{6}{7}y to get -\frac{1}{7}y.
6x-y-\frac{3}{4}x-\left(-\frac{6}{7}y\right)
To find the opposite of \frac{3}{4}x-\frac{6}{7}y, find the opposite of each term.
6x-y-\frac{3}{4}x+\frac{6}{7}y
The opposite of -\frac{6}{7}y is \frac{6}{7}y.
\frac{21}{4}x-y+\frac{6}{7}y
Combine 6x and -\frac{3}{4}x to get \frac{21}{4}x.
\frac{21}{4}x-\frac{1}{7}y
Combine -y and \frac{6}{7}y to get -\frac{1}{7}y.
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