Solve eta=a/4

$$\eta = \frac { a } { 4 }$$

Solve for a

$$a=4\eta$$

Steps for Solving Linear Equation

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

$$\frac{a}{4}=\eta$$

The equation is in standard form.

$$\frac{1}{4}a=\eta$$

Multiply both sides by 4.

$$\frac{\frac{1}{4}a}{\frac{1}{4}}=\frac{\eta }{\frac{1}{4}}$$

Dividing by \frac{1}{4} undoes the multiplication by \frac{1}{4}.

$$a=\frac{\eta }{\frac{1}{4}}$$

Divide \eta by \frac{1}{4} by multiplying \eta by the reciprocal of \frac{1}{4}.

$$a=4\eta$$

Solve for η

$$\eta =\frac{a}{4}$$