Question

Oblicz i zapisz wszystkie odpowiedzi:

a) mam rozwiązane

b) 2,4+0,05+14,9=

c) 1,5+2 1/3+ 3 1/5=

d) 14 7/12 - 3/4 - 1 5/6=

e) 40- 0,8-0,32=

f) 18,2-1 1/4- 2 1/5=

g) 7/12 : 10/9=

h)9/10 :3=

i) 7,5:5=

j) 0,6 : 1 1/7=

k) 2:3,5=

l) 6 2/9 : 13,5=

m) 5 1/5 + 2,8 : 1,5: 3/8+ 7=

Answer 1

b) 2,4 +0,05 +14,9 = 17,35

c) 1,5 +2i1/3 +3i1/5=1i1/2+2i1/3 +3i1/5= 1i15/30+ 2i 10/30 +3i6/30= 6i 31/30= 7i1/30

d) 14i7/12 -3/4 -1i5/6= 14i7/12 -9/12 -1i10/12 = 14i7/12 -10 i19/12=

   =   14i 7/12 -11i 7/12= 3

e)  40- 0,8 - 0,32 = 40 - 1,12 = 38,88

f)  18,2 -1 i1/4 -2i1/5= 18i1/5 -1i1/4 -2i1/5= 16 -1i1/4 = 15i4/4- 1i1/4= 14 i 3/4

g) 7/12 : 10/9 = 7/12 * 9/10 = 7/4 * 3/10 = 21/40

h) 9/10 : 3 = 9/10 * 1/3 = 3/10* 1/1 = 3/10 

i) 7,5 :5 = 1,5

j) 0,6 :1i1/7= 3/5 : 8/7= 3/5 * 7/8 = 21/40

k) 2 :3,5 = 0,57

l) 6i2/9 : 13,5= 56/9 : 13i1/2= 56/9 : 27/2 = 56/9 * 2/27 = 112/243

m) 5i1/5 +2,8 :1,5 : 3/8 +7 = 5i1/5 +2i 4/5 :1i1/2 :3/8 +7= 5i1/5+ 14/5:3/2:3/8+7 =

     = 5i1/5 + 14/5* 2/3 : 3/8 +7= 5i1/5+ 28/15 *8/3 +7= 5i1/5 +224/45+7=

     = 5 i1/5 + 4i 44/45 +7= 5 i9/45 +4i 44/45 +7 = 16 i 53/45= 17 i 8/45