Question

efectuati a)5 supra 12 + 3 supra 20
b)5 supra 12 - 3 supra 20
c)-5 supra 12 + 3 supra 20
d)-5 supra 12 × 3 supra 20
e)5 supra 12 : 3 supra 20
f) ( + 3 supra 20):(+ 5 supra 12)

Answer 1

a) 5/(12+3)/20=5/15/20=5/(15*20)=1/3*4=1/12