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 8a + 8a = 7a + 9x + 5 for a in terms of x.
| x + 5 | |
| -\(\frac{7}{8}\)x + \(\frac{5}{16}\) | |
| -3x + 8 | |
| \(\frac{2}{11}\)x - \(\frac{7}{11}\) |