7+5u=57
Subtract 7 from both sides of the equation.
5u=57-7
Subtract 7 from 57.
5u=50
5u=50
Divide each term in 5u=50 by 5.
5u5=505
Cancel the common factor of 5.
Cancel the common factor.
5u5=505
Divide u by 1.
u=505
u=505
Divide 50 by 5.
u=10
u=10
Solve for u 7+5u=57