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\left(\frac{y}{x}-7\right)\times 2x+x\times 7+x\times 6=x\times 7+x\left(-3\right)
Multiply both sides of the equation by x.
\left(\frac{y}{x}-\frac{7x}{x}\right)\times 2x+x\times 7+x\times 6=x\times 7+x\left(-3\right)
To add or subtract expressions, expand them to make their denominators the same. Multiply 7 times \frac{x}{x}.
\frac{y-7x}{x}\times 2x+x\times 7+x\times 6=x\times 7+x\left(-3\right)
Since \frac{y}{x} and \frac{7x}{x} have the same denominator, subtract them by subtracting their numerators.
\frac{\left(y-7x\right)\times 2}{x}x+x\times 7+x\times 6=x\times 7+x\left(-3\right)
Express \frac{y-7x}{x}\times 2 as a single fraction.
\frac{\left(y-7x\right)\times 2x}{x}+x\times 7+x\times 6=x\times 7+x\left(-3\right)
Express \frac{\left(y-7x\right)\times 2}{x}x as a single fraction.
2\left(-7x+y\right)+x\times 7+x\times 6=x\times 7+x\left(-3\right)
Cancel out x in both numerator and denominator.
-14x+2y+x\times 7+x\times 6=x\times 7+x\left(-3\right)
Use the distributive property to multiply 2 by -7x+y.
-7x+2y+x\times 6=x\times 7+x\left(-3\right)
Combine -14x and x\times 7 to get -7x.
-x+2y=x\times 7+x\left(-3\right)
Combine -7x and x\times 6 to get -x.
-x+2y=4x
Combine x\times 7 and x\left(-3\right) to get 4x.
2y=4x+x
Add x to both sides.
2y=5x
Combine 4x and x to get 5x.
\frac{2y}{2}=\frac{5x}{2}
Divide both sides by 2.
y=\frac{5x}{2}
Dividing by 2 undoes the multiplication by 2.