f i rs t 3 × 1 − 4 3 = 3 − 4 3 = 2 4 1
3 × 1 4 3 = 3 × 4 1 × 4 + 3 = 3 × 4 4 + 3 = 1 3 × 4 7 = 4 3 × 7 = 4 21 = 4 20 + 1 = 4 20 + 4 1 \center = 5 4 1
The expression 3 × ( 1 − 4 3 ) simplifies to 4 3 . We first calculated the subtraction inside the parentheses and then multiplied by 3 .
;