4 + (1/5) [{–10 x (25 – 13 – 3)} ÷ (–5)]
7.6
10
8.2
18
Explanation:
4 + (1/5) [{–10 x (25 – 13 – 3)} ÷ (–5)]
= 4 + (1/5) [{–10 x 9} ÷ (–5)]
= 4 + (1/5) [–90 ÷ (–5)]
= 4 + (1/5) [18]
= 4 + 1 ÷ 5 × 18
= 4 + .2 × 18
= 4 + 3.6
= 7.6
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