Solve C=3(y+k)

$$C = 3 ( y + k )$$

Solve for k

$$k=\frac{C-3y}{3}$$

Steps for Solving Linear Equation

Use the distributive property to multiply 3 by y+k.

$$C=3y+3k$$

Swap sides so that all variable terms are on the left hand side.

$$3y+3k=C$$

Subtract 3y from both sides.

$$3k=C-3y$$

Divide both sides by 3.

$$\frac{3k}{3}=\frac{C-3y}{3}$$

Dividing by 3 undoes the multiplication by 3.

$$k=\frac{C-3y}{3}$$

Divide C-3y by 3.

$$k=\frac{C}{3}-y$$

Solve for C

$$C=3\left(y+k\right)$$

Solution Steps

Use the distributive property to multiply 3 by y+k.

$$C=3y+3k$$