Using BODMAS
A) 18 - 6 ÷ 2
18 - 3
15
B) 4 (9 + 1) ÷ 2 (6)
4 (10) ÷ 2 (6)
40 ÷ 2 × 6
20 × 6
120
C) -2 (3 + 4)
-2 (7)
-14
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