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 = -7a - 5z + 3 for a in terms of z.
| -\(\frac{4}{5}\)z + \(\frac{1}{5}\) | |
| -1\(\frac{1}{4}\)z - \(\frac{1}{2}\) | |
| -16z - 8 | |
| -2z + 3\(\frac{1}{2}\) |