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