Jessica worked on a straight 7% commission. her friend worked on a salary of $850 plus a 6% commission. in a particular month they both sold $18,000 worth of merchandise. how much did jessica earn in a month?

There is your answer I did not fell like typing it

1. isolate the variable, in this case, d. subtract 35.5 on both sides of the equation.2. 52 subtracted by 35.5 is 16.53. therefore your answer would be d= 16.5this is the basics of pre algebra, isolating variable through adding, subtracting, multiplying, and dividing, if you have any other questions to ask just comment!