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 -4a + a = -5a + 7z + 6 for a in terms of z.
| -1\(\frac{6}{7}\)z + 1\(\frac{2}{7}\) | |
| 11z + 3 | |
| -3\(\frac{2}{5}\)z + 1 | |
| 6z + 6 |