Solve 150*(80-x)+105*20=1290000

$$150 \times (80-x)+105 \times 20=1290000$$

Solve for x

$$x=-8506$$

Steps for Solving Linear Equation

Use the distributive property to multiply 150 by 80-x.

$$12000-150x+105\times 20=1290000$$

Multiply 105 and 20 to get 2100.

$$12000-150x+2100=1290000$$

Add 12000 and 2100 to get 14100.

$$14100-150x=1290000$$

Subtract 14100 from both sides.

$$-150x=1290000-14100$$

Subtract 14100 from 1290000 to get 1275900.

$$-150x=1275900$$

Divide both sides by -150.

$$x=\frac{1275900}{-150}$$

Divide 1275900 by -150 to get -8506.

$$x=-8506$$