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 - 6a = -5a + 7z + 1 for a in terms of z.
| -2\(\frac{1}{7}\)z - 1\(\frac{1}{7}\) | |
| 1\(\frac{2}{3}\)z + 1\(\frac{2}{3}\) | |
| 3\(\frac{1}{4}\)z + \(\frac{1}{4}\) | |
| z - 1 |