Question

Efectuati :
a) -1 supra 4 + (-2)·3 supra 8 =
b)3 supra 4+ -5supra 6 :1 supra 2 =
c) 4 supra 3 + 4supra 3 : 1 supra 2 =
d) 0,57-0,10·0,5=
e)4 supra 3-4 supra 3 :0,5=
f)2 supra 3·-6 supra 5·3 supra 4 ·4supra 5=
g) {- 2supra 3 - 1 supra 2} : 2 intregi si 1 supra 3+(-0.1)

VA ROG AM NEVOIE URGENT!!!!!

Answer 1

-1/4+(-3/4)=-4/4=-1
3/4+(-5/6)×2/1=3/4-5/3=(9-20)/12=-11/20
4/3+4/3×2/1=12/3=4
57/100-50/1000=520/1000=0,520
4/3(1-2)=-4/3
2/3-18/20-4/5=2/3-9/5-4/5=2/3-13/5=(10-39)/15=-29/15
(-4-3)/6:7/3-1/10=-1/2-1/10=(-5-1)/10=-6/10=-3/5