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