Question

dau coroana am nevoie mult​

Answer 1

Răspuns:

Explicație pas cu pas:

a) | 3/2-1,(6) | + | 2,8(3)-1/3 |= | 3/2-(16-1)/9 | + | (283-28)/90-1/3 |=

| 3/2-15/9 | + | 255/90-1/3 |= | 3/2-5/3 |+ | 51/18-1/3 |= | (9-10)/6 | + | 17/6-1/3 | = | -1/6 | + | (17-2)/6 |=1/6+ |15/6 |=1/6+ 5/2=(1+15)/6=16/6=8/3        

b) | 0,1(6) -3/8 | - | 4,25-25/6 |= | (16-1)/90-3/8 | - | 425/100-25/6 |=

| 15/90 -3/8 | - | 17/4-25/6 | = | 1/6-3/8 | - | (17·3-25·2)/12 | =

| (4-3·3)/24 | - | (51-50)/12 | = |-5/24 | - |1/12 |= 5/24-1/12=(5-1·2)/24=3/24=1/8