To isolate a single variable when re-arranging equations, move all other variables to the_____of the equation by using the____on them and remembering to perform that operation_____. Make sure the rearrangement has the target variable_____.
a. on the left side, not the right side.
b. in the numerator, not the denominator.
c. with a coefficient, not without one.
d. with a negative sign, not a positive sign.