Multiply 0.25 by 70.
Apply the distributive property.
Multiply 0.8 by 70.
Move all terms containing y to the left side of the equation.
Subtract 0.8y from both sides of the equation.
Subtract 0.8y from 0.9y.
Move all terms not containing y to the right side of the equation.
Subtract 17.5 from both sides of the equation.
Subtract 17.5 from 56.
Divide each term by 0.1 and simplify.
Divide each term in 0.1y=38.5 by 0.1.
Cancel the common factor of 0.1.
Divide 38.5 by 0.1.
Solve for y 0.90y+0.25(70)=0.80(y+70)