Question

2/3x (2 5/6 + 1,75)

(4 7/8-2,5) x1 1/3

2 2/3 : (1 7/9 + 2 2/15)

1 4/5 : (8 13/25 - 1,5)

3 1/2 x (1 3/5 + 2,75)

1 2/3 : (5,5x2 2/11 - 3 2/3)

to jest zadanie 9 str 13 "Matematyka wokół nas 1" x to jest mnożenie

Answer 1

1.(2 / 3) x ((2 5/6) + 1,75) = 3,055555562.(4 7/8 - 2,5) x (1 1/3) = 3,16666667

3.tego nie wiem

4. 1 4/5 : (8 13/25 - 1,5)= 1,8:(8,52-1,5)= 1,8:7,02= 18/10 : 702/100 = 18/10 * 100/702 = 10/39

5.(3 1/2) x ((1 3/5) + 2,75) = 15,22500

6.1 2/3 : (5,5x2 2/11 - 3 2/3) = 5/3 : (11/2 * 24/11 - 11/3) = 5/3 : (12 - 11/3) = 5/3 : 8 i 1/3 = 5/3 : 25/3 = 5/3 : 25/3 = 5/3 * 3/25 = 1/5

Pozdro, mysle ze dobrze:)

Answer 2

a/=2/3x(2i10/12 +1i 9/12)=2/3x(2/3x4i7/12=2/3x55/12=4i 1/18

b/=( 4i 7/8-2i5/10)x4/3=( 4i40/80-2i 40/80)x4/3=2x4/3=8/3=2i 2/3

c/=2i 2/3:(1i35/45 +2 i 6/45)=2i2/3:3i 41/45=8/3:176/45=8/3x45/176=15/44po skróceniu.

d/=1i4/5:( 8i16/50 -1i25/50)=1i4/5:6i41/50=9/5x50/341=90/341

e/3,5x(1,6+2,75)=3,5x4,35=15,225

f/=1i2/3:( 5i5/10x2i2/11-3i2/3 )=1i2/3:(315/10-3i2/3)= 1i2/3:(11i5/10-3i2/3)=1i2/3:

(11i15/10-3i20/30)=1i2/3:7i5/6=5/3x6/47=10/47po skróceniu