calculati a) 9 supra 7 x 3 supra 5 = b) 14 supra 3 : 7 supra 6= c) 16 supra 15 x 3 supra 4 x 2 supra 5= d) 1 pe 5 supra 8: 39 supra72 ajutorrrrrrrrrrrrrrrrr! !!!!!!!