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a fost răspuns

Efectuati:
a) 2/7-3/4:7/8=
b)43/10-(5/2-3/5)=
c)-1/8+3/8x2/5=
d)3/7x7/9+(1/2)^2= (^2 inseamna la puterea a 2a)
e)1/5x20/3-5/6:5/12=
f)12/25:3/15+2x13/10=

Va rog.. multumesc.

Răspuns :

Robebe
a) 2/7-3/4•8/7=
2/7-6/7=
-5/7
b) 43/10-(25/10-5/10)=
43/10-20/10=
23/10
c) -1/8+3/20=
-5/40+6/40=
1/40
d) 1/3+1/4=
4/12+3/12=
7/12
e) 4/3-5/6•12/5=
4/3-1/2=
8/6-3/6=
5/6
f) 4/1+13/5=
20/5+13/5=
33/5

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