Question

RAPID DAU COROANĂ!!!!!!​:(

Answer 1

Răspuns:

4*20=4*(10*2)=(4*2)*10

50*3=(5*10)*3=(5*3)*10

90*2=(9*10)*2=(9*2)*10

15*4=(3*5)*4=(3*4)*5

6*34=6*(2*17)=(17*6)*2

77*2=(7*11)*2=(7*2)*11

88*2=(11*8)*2=(2*8)*11

3*55=(5*11)*3=(5*3)*11

7*50=(5*10)*7=(5*7)*10

60*4=(6*10)=(6*4)*10

70*3=(7*10)*3=(7*3)*10

25*3=(5*5)*3=(5*3)*5

34*5=(2*17)*5=(17*5)*2

81*4=(27*3)*4=(4*27)*3