A window cleaner has enough supplies to clean 21 windows per office building on a certain number of buildings. They can also clean the windows of a school with 42 windows. Altogether, there are enough supplies to clean 126 windows. How many office buildings can be washed? Identify the equation that would be used to solve this problem algebraically.(1 point)
Responses
21x+42=126
21 x plus 42 equals 126
42x−21=126
42 x minus 21 equals 126
21x−42=126
21 x minus 42 equals 126
42x+21=126
2 answers
42 x plus 21 equals 126
sorry bros this is wrong dont use this one. I found out the hard way.