evaluate : 20 - 12 ÷ 4 × 2 =
"according to order of operations , 12 ÷ 4 × 2 ( division and multiplication ) is done first from left to right 12 ÷ 4 × 2 = 3 × 2 = 6 hence 20 - 12 ÷ 4 × 2 = 20 - 6 = 14 correct answer is b ) 22"
subtract(20, multiply(multiply(12, const_2.0), 2))