When solving an equation with two variables, replace the variables with the values given and then solve the now variable-free equation. (Remember order of operations, PEMDAS, Parentheses, Exponents, Multiplication/Division, Addition/Subtraction.)
Solve -a + 4a = -8a - 5z + 2 for a in terms of z.
| -4z - 2\(\frac{2}{3}\) | |
| -1\(\frac{2}{7}\)z + \(\frac{2}{7}\) | |
| -17z + 1 | |
| \(\frac{1}{3}\)z + 1\(\frac{1}{2}\) |