Solve for y
y=2
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y\times 9-4=7y
Variable y cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by y.
y\times 9-4-7y=0
Subtract 7y from both sides.
2y-4=0
Combine y\times 9 and -7y to get 2y.
2y=4
Add 4 to both sides. Anything plus zero gives itself.
y=\frac{4}{2}
Divide both sides by 2.
y=2
Divide 4 by 2 to get 2.
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