Solve 600I_{2}-10800+900E_{4}=0

$$600 I _ { 2 } - 10800 + 900 E _ { 4 } = 0$$

Solve for E_4

$$E_{4}=-\frac{2I_{2}}{3}+12$$

Steps for Solving Linear Equation

Subtract 600I_{2} from both sides. Anything subtracted from zero gives its negation.

$$-10800+900E_{4}=-600I_{2}$$

Add 10800 to both sides.

$$900E_{4}=-600I_{2}+10800$$

The equation is in standard form.

$$900E_{4}=10800-600I_{2}$$

Divide both sides by 900.

$$\frac{900E_{4}}{900}=\frac{10800-600I_{2}}{900}$$

Dividing by 900 undoes the multiplication by 900.

$$E_{4}=\frac{10800-600I_{2}}{900}$$

Divide -600I_{2}+10800 by 900.

$$E_{4}=-\frac{2I_{2}}{3}+12$$

Solve for I_2

$$I_{2}=-\frac{3E_{4}}{2}+18$$

Steps for Solving Linear Equation

Add 10800 to both sides. Anything plus zero gives itself.

$$600I_{2}+900E_{4}=10800$$

Subtract 900E_{4} from both sides.

$$600I_{2}=10800-900E_{4}$$

Divide both sides by 600.

$$\frac{600I_{2}}{600}=\frac{10800-900E_{4}}{600}$$

Dividing by 600 undoes the multiplication by 600.

$$I_{2}=\frac{10800-900E_{4}}{600}$$

Divide 10800-900E_{4} by 600.

$$I_{2}=-\frac{3E_{4}}{2}+18$$