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 a + 2a = 7a - 3z + 8 for a in terms of z.
| z - \(\frac{1}{6}\) | |
| \(\frac{3}{14}\)z + \(\frac{3}{7}\) | |
| \(\frac{6}{7}\)z + 1\(\frac{1}{7}\) | |
| \(\frac{5}{6}\)z - 1\(\frac{1}{3}\) |