Question

2:Efetue as operações
a)+30+20

b)+30-20

c)-30+20

d)-30-20

3:Calcule

a)+100-27

b)-100-27

c)-100-27

d+100+27​

Answer 1

Resposta:

a)+30+20=+50

b)+30-20=+10

c)-30+20=-10

d)-30-20=-10

3-Calcule  

a)+100-27=+73

b)-100-27=-127

c)-100-27=-127

d)+100+27​=+127