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)

Question

Responses

42x+21=126
42 x plus 21 equals 126

21x−42=126
21 x minus 42 equals 126

21x+42=126
21 x plus 42 equals 126

42x−21=126

Answer 1

To determine how many office buildings can be washed, we need to set up an equation based on the information given.

Let \( x \) represent the number of office buildings. Each office building contributes 21 windows that can be cleaned, and there is also a school with 42 windows. The total windows that can be cleaned is 126.

The equation representing this situation can be written as:

\[ 21x + 42 = 126 \]

So, the correct response is:

21x + 42 = 126