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