y9-7=20
Add 7 to both sides of the equation.
y9=20+7
Add 20 and 7.
y9=27
y9=27
Multiply both sides of the equation by 9.
9⋅y9=9⋅27
Cancel the common factor of 9.
Cancel the common factor.
9⋅y9=9⋅27
Rewrite the expression.
y=9⋅27
y=9⋅27
Multiply 9 by 27.
y=243
y=243
Solve for y y/9-7=20