Solve for y
y=\frac{D-24}{6}
Solve for D
D=6\left(y+4\right)
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D=6y+24
Use the distributive property to multiply 6 by y+4.
6y+24=D
Swap sides so that all variable terms are on the left hand side.
6y=D-24
Subtract 24 from both sides.
\frac{6y}{6}=\frac{D-24}{6}
Divide both sides by 6.
y=\frac{D-24}{6}
Dividing by 6 undoes the multiplication by 6.
y=\frac{D}{6}-4
Divide D-24 by 6.
D=6y+24
Use the distributive property to multiply 6 by y+4.
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