Question

Calculati cit mai simplu
a)8/9+14/27+1/9
b)(3/17+8/102)+14/17
c)(1/33+3/11)+2/11
d)2/5+(1/20+4/5)

Answer 1

a ) = 9/9 +14/27 =1 + 14/27 = 41/27
b) desfaci paranteza si obtii 3/17 + 8/102 +14/17 = 17/17 + 8/102 = 1 + 8/102 = 110/102
c) desfaci paranteza si obtii : 1/33 +3/11+ 2/11 = 1/33+ 5/11 (amplifici a doua fractie cu 3 ) = 1/33 +15/33 = 16/33
d) desfaci paranteza si obtii : 2/5 + 1/20 +4/5 = 6/5 + 1/20 (amplifici prima fractie cu 4 ) = 25/20