f) (pi )/(-3)=-3 h) -9x=-18 j) 4x=56

## Step 1: Isolate $\pi$ in equation f)<br />### Multiply both sides of the equation $\frac{\pi}{-3} = -3$ by $-3$ to isolate $\pi$. This gives $\pi = (-3) \times (-3) = 9$.<br />## Step 2: Isolate $x$ in equation h)<br />### Divide both sides of the equation $-9x = -18$ by $-9$ to isolate $x$. This gives $x = \frac{-18}{-9} = 2$.<br />## Step 3: Isolate $x$ in equation j)<br />### Divide both sides of the equation $4x = 56$ by $4$ to isolate $x$. This gives $x = \frac{56}{4} = 14$.