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