Explanation:
(72/8) - 2 * 3 + 1
= 9 − (2) (3) + 1
= 9 − 6 + 1
= 3 + 1
= 4
72/(8 - 2) * 3 + 1
= 72/6(3) + 1
= (12)(3) + 1
= 36 + 1
= 37
72/(8 - 2) * (3 + 1)
= 72/6(3 + 1)
= 12(3 + 1)
= (12)(4)
= 48
72/8 -2 * (3+1)
= 9 - 2(3 + 1)
= 9 - (2)(4)
= 9 - 8
= 1
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