Question

which of the expressions are equivalent to the one below? (15•3)-20



A. (3-20)•(15-20)
B. (3•15)-20
C. 6•(15-20)
D. 20-(3•15)

Answer 1

Note that the given  (15•3)-20  involves multiplication and subtraction.  The mult. must be carried out first.  Thus, (15•3)-20 = 45-20, or (3*15)-20.  Only answer B is equivalent to (15•3)-20.

Answer 2

Answer:

B should be equivalent

Step-by-step explanation: