Question

Efetue a substracões

A (-5) -(-3)-(7)
B 45-(+75)-(+10)
C (-20)-(-15)
D (-16) -(+71)

Answer 1

a)(-5)-(-3)-7=-5+3-7= -12+3= -9
b)45-(+75)-(+10)=45-75-10=45-85=-40
c)(-20)-(-15)= -20+15= -5
d)(-16)-(+71)= -16-71= -77