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 + 4a = 6a + 5z - 1 for a in terms of z.
| -1\(\frac{3}{10}\)z - \(\frac{1}{10}\) | |
| z - 1 | |
| \(\frac{5}{6}\)z - \(\frac{1}{2}\) | |
| -7z - 6 |