Question

dau 50 de puncte si coroana! ex 6 subpunctele:a,c si ex 7​

Answer 1

Răspuns:

a)

31/12÷(16/5-13/6)=31/12÷(96/30-65/30)=31/12÷31/30=31/12×30/31=30/12=10/4

c)(16/5-5/2)÷(7/6+7/3)=(32/10-25/10)÷(7/6+14/6)=7/10÷21/6=7/10×6/21=1/10×6/3=1/10×2=2/10=1/5

7.

lungimea cablului=23/10 metri

a)

23/10=2,3

5/3=0,6

2,3÷0,6=3,8(3) trei bucati de cablu egale

b)

3,8(3)-3=0,8(3)