Subtract 4y from both sides of the equation.
Divide each term by 3 and simplify.
Divide each term in 3x=15-4y by 3.
Cancel the common factor of 3.
Cancel the common factor.
Divide x by 1.
Simplify each term.
Divide 15 by 3.
Move the negative in front of the fraction.
Solve for x 3x+4y=15