The equation that would be used to solve this problem algebraically is:
21x + 42 = 126
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 minus 42 equals 126 42x−21=126 42 x minus 21 equals 126 42x+21=126 42 x plus 21 equals 126 21x+42=126
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