Răspuns :
8 × ( 23 + 14 ) = 8 × 37 = 296 → primul mod
= 8 × 23 + 8 × 14 = 184 + 112 = 296 → al doilea mod
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( 123 + 23 ) × 3 = 146 × 3 = 438
= 123 × 3 + 23 × 3 = 369 + 69 = 438
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( 120 - 16 ) × 4 = 104 × 4 = 416 → primul mod
= 120 × 4 - 16 × 4 = 480 - 64 = 416 → al doilea mod
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5 × ( 325 - 250 ) = 5 × 75 = 375
= 5 × 325 - 5 × 250 = 1 625 - 1 250 = 375
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( 42 + 18 ) × 16 = 60 × 16 = 960
= 42 × 16 + 18 × 16 = 672 + 288 = 960
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11 × ( 32 - 15 ) = 11 × 17 = 187
= 11 × 32 - 11 × 15 = 352 - 165 = 187
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15 × ( 84 - 29 ) = 15 × 55 = 825 → primul mod
= 15 × 84 - 15 × 29 = 1 260 - 435 = 825 → al doilea mod