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 -3b - 4b = -b + 5z - 7 for b in terms of z.
| -3\(\frac{1}{4}\)z + 1\(\frac{1}{2}\) | |
| -2z + \(\frac{1}{2}\) | |
| \(\frac{14}{15}\)z + \(\frac{1}{15}\) | |
| -4\(\frac{1}{2}\)z + 3\(\frac{1}{2}\) |