Question

Alguém consegue calcular essas expressões????

Answer 1

a) 2+(-12) : (-3)-(-5)•2
=2+4+5•2
=2+4+10
=16

b)-12+[(-7-3) : (-2)]
=-12+[-10: (-2)]
=-12+[+5]
=-12+5
=-7

c)-9/2+[-1-(-5/8+1/4)]
-9/2+ [-1-(-5/8+2/8)]
-9/2+[-1-(-3/8)]
-9/2+[-1+3/8]
-9/2+[-5/8]
-9/2-5/8
-32/8-5/8
=-37/8

d)7/3-[2-(1/3-1)]
7/3-[2-(-2/3)]
7/3-[2+2/3]
7/3-8/3
=-1/3