Question

Which ordered pair will solve the equation 2 × 4 + x = y?

A.
(5, 16)

B.
(4, 12)

C.
(3, 12)

D.
(2, 9)

Answer 1

This answer uses NMF, which you can find out about on my profile:

Preliminary work:
Following the BIDMAS order of operations, we can calculate part of it already, and that's the 2•4, which equals 8.
Therefore, the equation now reads:
8+x = y

x = 5:
8+5 = 13
13 ≠ 16
13 ≠ y

x = 4:
8+4 = 12
12 = 12
12 = y

Therefore, the pair is (4, 12)