3y+9=8y-7

Subtract 8y from both sides of the equation.

3y+9-8y=-7

Subtract 8y from 3y.

-5y+9=-7

-5y+9=-7

Subtract 9 from both sides of the equation.

-5y=-7-9

Subtract 9 from -7.

-5y=-16

-5y=-16

Divide each term in -5y=-16 by -5.

-5y-5=-16-5

Cancel the common factor of -5.

Cancel the common factor.

-5y-5=-16-5

Divide y by 1.

y=-16-5

y=-16-5

Dividing two negative values results in a positive value.

y=165

y=165

The result can be shown in multiple forms.

Exact Form:

y=165

Decimal Form:

y=3.2

Mixed Number Form:

y=315

Solve for y 3y+9=8y-7