Va rog!Dau coroana si 50 de puncte!​

Răspuns:

1/8+4/8=5/8 ;   b)         1/6+1/6×3/1=1/6+3/6=9/6=3/2 ;                                          d  )    4/3×5/2 +6=10/3+610/3+18/3=28/3 ;    e)  15/7×6/5-1/21×3/1=18/7-1/7=17/7

Explicație pas cu pas:

Răspuns:

Explicație pas cu pas:

a.   1/8+1/8x4=1/8+1/2=(1+4)/8=5/8

b.   1/6+1/6÷1/3=1/6+1/6x3/1=1/6+1/2=(1+3)/6=4/6=2/3

c.   4/9+3/10÷6/10=4/9+3/10x10/6=4/9+1/2=(8+9)/18=17/18

d.   1si1/3x2si1/2+6=4/3x5/2+6=10/3+6=(10+18)/3=28/3

e.   2si1/7x1si1/5-1/21÷1/3=15/7x6/5-1/21x3/1=18/7-1/7=(18-1)/7=17/7

f.   5/6÷(1/3+1/2÷1/3)=5/6÷(1/3+1/2x3/1)=5/6÷(1/3+3/2)=5/6÷(2+9)/6=5/6÷11/6=

5/6x6/11=5/11