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