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 -7a - 8a = -8a + 7z - 1 for a in terms of z.
| -z - 1\(\frac{1}{7}\) | |
| 15z - 1 | |
| z + \(\frac{3}{11}\) | |
| 1\(\frac{3}{16}\)z + \(\frac{1}{8}\) |