Solve 1000(0.12+0.04)=x(0.12+0.08)

$$1000(0.12+0.04)=x(0.12+0.08)$$

Solve for x

$$x=800$$

Steps for Solving Linear Equation

Add 0.12 and 0.04 to get 0.16.

$$1000\times 0.16=x\left(0.12+0.08\right)$$

Multiply 1000 and 0.16 to get 160.

$$160=x\left(0.12+0.08\right)$$

Add 0.12 and 0.08 to get 0.2.

$$160=x\times 0.2$$

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

$$x\times 0.2=160$$

Divide both sides by 0.2.

$$x=\frac{160}{0.2}$$

Expand \frac{160}{0.2} by multiplying both numerator and the denominator by 10.

$$x=\frac{1600}{2}$$

Divide 1600 by 2 to get 800.

$$x=800$$