Solve 8a+45+21+c=23

$$8 a + 45 + 21 + c = 23$$

Solve for a

$$a=\frac{-c-43}{8}$$

Steps for Solving Linear Equation

Add 45 and 21 to get 66.

$$8a+66+c=23$$

Subtract 66 from both sides.

$$8a+c=23-66$$

Subtract 66 from 23 to get -43.

$$8a+c=-43$$

Subtract c from both sides.

$$8a=-43-c$$

The equation is in standard form.

$$8a=-c-43$$

Divide both sides by 8.

$$\frac{8a}{8}=\frac{-c-43}{8}$$

Dividing by 8 undoes the multiplication by 8.

$$a=\frac{-c-43}{8}$$

Solve for c

$$c=-8a-43$$

Solution Steps

Add 45 and 21 to get 66.

$$8a+66+c=23$$

Subtract 8a from both sides.

$$66+c=23-8a$$

Subtract 66 from both sides.

$$c=23-8a-66$$

Subtract 66 from 23 to get -43.

$$c=-43-8a$$