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 + a = 7a + 7z + 2 for a in terms of z.
| -1\(\frac{1}{2}\)z - \(\frac{1}{2}\) | |
| 13z + 4 | |
| \(\frac{7}{10}\)z - \(\frac{1}{10}\) | |
| -\(\frac{1}{2}\)z + \(\frac{1}{4}\) |