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 - 7a = 7a - 6z + 3 for a in terms of z.
| 6z + 1\(\frac{1}{2}\) | |
| -\(\frac{7}{11}\)z + \(\frac{8}{11}\) | |
| -\(\frac{1}{10}\)z - \(\frac{3}{10}\) | |
| -\(\frac{2}{3}\)z - 1\(\frac{1}{6}\) |