Question

Resolva : A)2×(-3)+2×(-4) b) (4-7) ×(-5-2) c)-4×2+(-5)×(-3) d) (-6-4) × (-7+3)

Answer 1

a) 2 . (-3) + 2.(-4)
-6-8= -14

b) (4-7).(-5-2)
(-3).(-7)= 21

c) (-4).2+ (-5).(-3)
-8+15= -7

d) (-6-4).(-7+3)
(-10).(-4)= 40