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 8a + 7a = -5a - 9z + 4 for a in terms of z.
| -1\(\frac{3}{13}\)z + \(\frac{4}{13}\) | |
| -6z + 3 | |
| -\(\frac{2}{5}\)z - \(\frac{3}{10}\) | |
| \(\frac{3}{5}\)z - \(\frac{4}{5}\) |