Question

Which equation best represents this situation? The number 39 is equal to 13 subtracted from an unknown number. A. 39 = r ÷ 13 B. 39 = 13 + r C. 39 = r – 13 D. 39 = 13r

Answer 1

Let's translate the English into Math language:


39 = r-13

Answer 2

"The number 39 is equal to"

39=

"thirteen subtracted from an unknown number"

r-13

Putting it together you have:

39=r-13