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a fost răspuns

Calculati folosind factorul comun:
17×3+17×82+17×15=
11×3+11×17+11×40=​

Răspuns :

17 × 3 + 17 × 82 + 17 × 15 =

17 × ( 3 + 82 + 15 ) =

17 × ( 85 + 15 ) =

17 × 100 = 1700

11 × 3 + 11 × 17 + 11 × 40 =

11 × ( 3 + 17 + 40 ) =

11 × ( 20 + 40 ) =

11 × 60 = 660

17 × ( 3 + 82 + 15 ) =

17 × ( 85 + 15 ) =

17 × 100 =

1 700

11 × ( 3 + 17 + 40 ) =

11 × ( 20 + 40 ) =

11 × 60 =

660

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