Solve 10500=1/2*left(x+2xright)*100

$$10500 = \frac{ 1 }{ 2 } \times \left( x+2x \right) \times 100$$

Solve for x

$$x=70$$

Steps for Solving Linear Equation

Combine x and 2x to get 3x.

$$10500=\frac{1}{2}\times 3x\times 100$$

Multiply \frac{1}{2} and 3 to get \frac{3}{2}.

$$10500=\frac{3}{2}x\times 100$$

Express \frac{3}{2}\times 100 as a single fraction.

$$10500=\frac{3\times 100}{2}x$$

Multiply 3 and 100 to get 300.

$$10500=\frac{300}{2}x$$

Divide 300 by 2 to get 150.

$$10500=150x$$

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

$$150x=10500$$

Divide both sides by 150.

$$x=\frac{10500}{150}$$

Divide 10500 by 150 to get 70.

$$x=70$$