3a=5-2(2a-15)
Simplify each term.
Apply the distributive property.
3a=5-2(2a)-2⋅-15
Multiply 2 by -2.
3a=5-4a-2⋅-15
Multiply -2 by -15.
3a=5-4a+30
3a=5-4a+30
Add 5 and 30.
3a=-4a+35
3a=-4a+35
Add 4a to both sides of the equation.
3a+4a=35
Add 3a and 4a.
7a=35
7a=35
Divide each term in 7a=35 by 7.
7a7=357
Cancel the common factor of 7.
Cancel the common factor.
7a7=357
Divide a by 1.
a=357
a=357
Divide 35 by 7.
a=5
a=5
Solve for a 3a=5-2(2a-15)