3 × ( 2 + 3 ) = 3 × 5 = 15 = 3×2 + 3×3 = 6 + 9 = 15
( 2 + 4 ) × 8 = 6 × 8 = 48 = 2×8 + 4×8 = 16 + 32 = 48
5 × ( 4 + 5 ) = 5 × 9 = 45 = 5×4 + 5×5 = 20 + 25 = =45
( 9 - 2 ) × 7 = 7 × 7 = 49 = 9×7 - 7×2 = 63 - 14 = 49
4 × ( 5 + 2 ) = 4 × 7 = 28 = 4 × 5 + 4 × 2 = 20 + 8 = 28
( 7 - 1 ) × 9 = 6 × 9 = 54 = 9×7 - 9×1 = 63 - 9 = 54
exercitiile sunt rezolvate in 2 moduri si am scris in continuare al doilea mod , sunt facute in lanț.
