Solve 4a+8b=15

$$4 a + 8 b = 15$$

Solve for a

$$a=\frac{15}{4}-2b$$

Steps for Solving Linear Equation

Subtract 8b from both sides.

$$4a=15-8b$$

Divide both sides by 4.

$$\frac{4a}{4}=\frac{15-8b}{4}$$

Dividing by 4 undoes the multiplication by 4.

$$a=\frac{15-8b}{4}$$

Divide 15-8b by 4.

$$a=\frac{15}{4}-2b$$

Solve for b

$$b=-\frac{a}{2}+\frac{15}{8}$$

Steps for Solving Linear Equation

Subtract 4a from both sides.

$$8b=15-4a$$

Divide both sides by 8.

$$\frac{8b}{8}=\frac{15-4a}{8}$$

Dividing by 8 undoes the multiplication by 8.

$$b=\frac{15-4a}{8}$$

Divide 15-4a by 8.

$$b=-\frac{a}{2}+\frac{15}{8}$$