Question

Proszę o rozwiązanie .

1) (3 1/5-1,4)*2 1/3:(-0,6)=

2) (-2 1/2)+5 1/8=

3) (6,25-2 /2):2 1/7-1=

4) (1,5-1 1/3)*2 2/5-0,1=

5) 4/7:7/8=

6) (3/4-1/5):1/2=

Answer 1

1) (3i1/5-1,4)*2i1/3:(-0,6)=(16/5-7/5)*7/3*(-5/3)=9/5+7/3*(-5/3)=-315/45=-7

2) (-5/2)+41/8=-20/8+41/8=-61/8=7i5/8

3) (25/4-1):15/7-1=(6i1/4-1)*7/15-1=21/4*7/15-1=147/60-1=2i27/60-1=1i9/20

4) (3/2-4/3)*12/5-1/10=(9/6-8/6)*12/5-1/10=1/6*12/5-1=6/5-1=1i1/5-1=1/5

5) 4/7*8/7=32/49

6) (15/20-4/20)*2=11/20*2=22/20=2i1/10

Answer 2

1)  (3 i 1/5-1,4)*2 i 1/3:(-0,6) = (3 i 1/5 - 1 i 2/5)* 2 i 1/3 : (-3/5) = 1 i 4/5 * 2 i 1/3 : (-3/5) = 9/5 * 7/3 * (-5/3) =-7

2) (-2 1/2)+5 1/8= 5 i 1/8 - 2 i 1/2 = 5 i 1/8 - 2 i 4/8 = 2 i 5/8

3)  (6,25-2 /2):2 i 1/7-1 = (3 i 1/8 - 1) : 2 i 1/7 - 1 = 2 i 1/8 : 15/7 - 1 = 17/8 :15/7 - 1 = 17/8 * 7/16 - 1 = 119/128 - 1 = -9/128

4) (1,5-1 i 1/3)*2 i 2/5-0,1= (1 i 1/2 - 1 i 1/3) * 2 i 2/5 - 1/10 = (1 i 3/6 - 1 i 2/6) * 12/5 - 1/10 = 1/6 * 12/5 - 1/10 = 2/5 - 1/10 = 4/10 - 1/10 = 3/10

5) 4/7:7/8= 32/49

6) (3/4-1/5):1/2= (15/20 - 4/20) * 2 = 11/20 * 2 = 11/10 = 1 i 1/10