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