John vasilovik works in landscaping. he gets paid $50 for each house he pressure-washes and $20 for each lawn he mows. he gets 4times more jobs for mowing lawns than for pressure-washing houses. during a given month, john earns $2,600. how many houses does john pressure wash?

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!