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