Solve r2-A=10

$$r 2 - A = 10$$

Solve for A

$$A=r_{2}-10$$

Steps for Solving Linear Equation

Subtract r_{2} from both sides.

$$-A=10-r_{2}$$

Divide both sides by -1.

$$\frac{-A}{-1}=\frac{10-r_{2}}{-1}$$

Dividing by -1 undoes the multiplication by -1.

$$A=\frac{10-r_{2}}{-1}$$

Divide 10-r_{2} by -1.

$$A=r_{2}-10$$

Solve for r_2

$$r_{2}=A+10$$

Solution Steps

Add A to both sides.

$$r_{2}=10+A$$