Explicație pas cu pas:
a) (– 1 + 36 – 32) ∙ (– 8 + 52 – 41) =
( 35 – 32) ∙ (44 – 41) = 3 × 3 = 9
b) (+ 39 – 28 – 17) ∙ (– 12 – 47 + 63) =
( 11 – 17) ∙ (– 59+ 63) = -6 x 4 = -24
c) (+ 72 – 36 – 35) ∙ (– 11 + 75 – 68) =
(36 – 35) ∙ (64 – 68) = 1 x -4 = - 4
