Solve 120^2-12*(200*20^3)=14400-d

$$120 ^ { 2 } - 12 \cdot ( 200 \times 20 ^ { 3 } ) = 14400 - d$$

Solve for d

$$d=19200000$$

Steps for Solving Linear Equation

Calculate 120 to the power of 2 and get 14400.

$$14400-12\times 200\times 20^{3}=14400-d$$

Multiply 12 and 200 to get 2400.

$$14400-2400\times 20^{3}=14400-d$$

Calculate 20 to the power of 3 and get 8000.

$$14400-2400\times 8000=14400-d$$

Multiply 2400 and 8000 to get 19200000.

$$14400-19200000=14400-d$$

Subtract 19200000 from 14400 to get -19185600.

$$-19185600=14400-d$$

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

$$14400-d=-19185600$$

Subtract 14400 from both sides.

$$-d=-19185600-14400$$

Subtract 14400 from -19185600 to get -19200000.

$$-d=-19200000$$

Multiply both sides by -1.

$$d=19200000$$