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 -7a + 7a = 4a + 4z - 6 for a in terms of z.
| -3z + 5 | |
| \(\frac{6}{11}\)z + \(\frac{9}{11}\) | |
| 4z + 9 | |
| \(\frac{3}{11}\)z + \(\frac{6}{11}\) |