10a-20=4a+80

Subtract 4a from both sides of the equation.

10a-20-4a=80

Subtract 4a from 10a.

6a-20=80

6a-20=80

Add 20 to both sides of the equation.

6a=80+20

Add 80 and 20.

6a=100

6a=100

Divide each term in 6a=100 by 6.

6a6=1006

Cancel the common factor of 6.

Cancel the common factor.

6a6=1006

Divide a by 1.

a=1006

a=1006

Cancel the common factor of 100 and 6.

Factor 2 out of 100.

a=2(50)6

Cancel the common factors.

Factor 2 out of 6.

a=2⋅502⋅3

Cancel the common factor.

a=2⋅502⋅3

Rewrite the expression.

a=503

a=503

a=503

a=503

The result can be shown in multiple forms.

Exact Form:

a=503

Decimal Form:

a=16.6‾

Mixed Number Form:

a=1623

Solve for a 10a-20=4a+80