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calculează:
a)1/4 x (1,5+0,(3):2)
b)[1/4+(2,5-1 3/4):7/8]x14
c)[3,5+(5+1/6)-4 1/3]:3 2/3x2/5
Vă rog urgent,dau coroană
vă rog mult,pls pls pls​