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 + 7a = -5a - 9z - 5 for a in terms of z.
| -1\(\frac{1}{10}\)z - \(\frac{1}{2}\) | |
| -\(\frac{1}{7}\)z - \(\frac{3}{7}\) | |
| -2z + 1\(\frac{1}{3}\) | |
| -1\(\frac{1}{3}\)z - \(\frac{5}{12}\) |