Question

(-59).(+7)
(+4).(-9)
(8-).(-6)
22*(12+8)
10*(4-3)
2*(7-3)
8*(5-1)+2*{2-3*(4-2)

Answer 1

Resultados:

$( - 59) \times ( + 7) \\ - (59 \times 7) \\ = - 413$

$( + 4) \times ( - 9) \\ 4 \times ( - 9) \\ - (4 \times 9) \\ = - 36$

$8 \times ( - 6) \\ - (8 \times 6) \\ = - 48$

$22 \times (12 + 8) \\ 22 \times 20 \\ = 440$

$10 \times (4 - 3) \\ 10 \times 1 \\ = 10$

$2 \times (7 - 3) \\ 2 \times 4 \\ = 8$

$8 \times ( 5 - 1) + 2 \times (2 - 3 \times (4 - 2)) \\ 8 \times 4 + 2(2 - 3 \times 2) \\ 8 \times 4 + 2(2 - 6) \\ 8 \times 4 + 2 \times ( - 4) \\ 8 \times 4 - 2 \times 4 \\ 4(8 - 2) \\ 4 \times 6 \\ = 24$