Solve 90^2=1/2b*15

$${ 90 }^{ 2 } = \frac{ 1 }{ 2 } b \times 15$$

Solve for b

$$b=1080$$

Steps for Solving Linear Equation

Calculate 90 to the power of 2 and get 8100.

$$8100=\frac{1}{2}b\times 15$$

Multiply \frac{1}{2} and 15 to get \frac{15}{2}.

$$8100=\frac{15}{2}b$$

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

$$\frac{15}{2}b=8100$$

Multiply both sides by \frac{2}{15}, the reciprocal of \frac{15}{2}.

$$b=8100\times \frac{2}{15}$$

Express 8100\times \frac{2}{15} as a single fraction.

$$b=\frac{8100\times 2}{15}$$

Multiply 8100 and 2 to get 16200.

$$b=\frac{16200}{15}$$

Divide 16200 by 15 to get 1080.

$$b=1080$$