Question

a]1i2/5+1/4=

b]5i3/5+1i3/4=

c]4i2/3-2i2/7=

d]8i1/10-6i3/5=

e]18*5i2/3=

f]2i1/3*1i2/7=

g]4i1/6:15=

h]4i2/7:3i1/8=

prosze o szybkie rozwiazanie , wazne . z gory dziekuje.

Answer 1

a]1i2/5+1/4=  7/5 + 1/4 = 28/20 + 5/20 = 33/20 = 1 i 13/20

b]5i3/5+1i3/4=  28/5 + 7/4 = 112/20 + 35/20 = 147/20 = 7 i 7/20

 c]4i2/3-2i2/7=  14/3 - 16/7 = 98/21 - 48/21 = 50/21 = 2 i 8/21

d]8i1/10-6i3/5= 81/10 - 33/5 = 81/10 - 66/10 = 15/10 = 3/2 = 1 i 1/2

 e]18*5i2/3= 18 * 17/3 = 6 * 17 = 102

  f]2i1/3*1i2/7= 7/3 * 9/7 = 1/3 * 9 = 3

 g]4i1/6:15= 25/6 * 1/15 = 5/6 * 1/3 = 5/18

 h]4i2/7:3i1/8= 30/7 : 25/8 = 30/7 * 8/25 = 6/7 * 8/5 = 48/35 = 1 i 13/35

Answer 2