20 + 60 + 50 + 80 + 90 + 10 + 50 + 60 x 10

= (20 + 80) + (50 + 50 ) + (90 + 10 ) + 600 + 60

=     100     +      100     +      100     + 660

=              960

=(20+80)+(50+50)+(90+10)+(60*10)+60

=100+100+100+600+60

=960

20 + 60 + 50 + 80 + 90 + 10 + 50 + 60 x 10

= 20 + 60 + 50 + 80 + 90 + 10 + 50 + 600

= ( 20 + 80 ) + ( 50 + 50 ) + ( 90 + 10 ) + 60 + 600

= 100 + 100 + 100 + 60 + 600

= 100 . 3 + 660

= 300 + 660

= 960

a) x + 100 = 50 + 60

x + 100 = 110

x = 110 - 100

x = 10

b) x + 50 = 30 + 60

x + 50 = 90

x = 90 - 50

x = 40

_______________________________________________THE END_____________________________________________________

a)=10

b)40 

tk m nhé

A)

x+100=50+60

x+100=110

x=110-100

x=10

B)

x+50=30+60

x+50=90

x=90-50

x=40

x + 60 = 50 + 60

x + 60 = 110

x         = 110 - 60

x         = 50

x + 60 = 50 + 60

x + 60 = 110

x        = 110 - 60

x        = 50

x + 60 = 50 +60 

x + 60 = 110

x        = 110 - 60

x       = 50

50*5+60*5=250+300=550

=50 x5+60 x5

=5(50+60)

=5 x110

=550 ok

=50x5+60x5 = 550

a) x+100=50+60

x+100=110

x=110-100

x=10

vậy x=10

b)x+50=30+60

x+50=90

x=40

vậy x= 40.

a) x + 100 = 50 + 60

x + 100 = 110

x = 110 - 100

x = 10

b) x + 50 = 30 + 60

x + 50 = 90

x = 90 - 50

x = 40

a ) x + 100 = 50 + 60

    x + 100 = 110

    x = 110 - 100

    x = 10

Vậy x = 10

b) x + 50 = 30 + 60

x + 50 = 90

x        = 90 - 50

x        = 40

Vậy x = 40

2500

2400

1000

50 x 50=2500

60x40=2400

50x20=1000

tick mk nha bạn  

2500

2400

1000

x + 50 = 50 + 60

x + 50 = 110

        x = 110 - 50

        x = 60

ai tk mk mk tk lại

x+50=50+60

x+50=110

x=110-50

x=60

x+50=110

x=110-50

x=60

= ( 60 + 50+40+30+20+10 ) x 2000 + 1500

= 210 x 2000 + 1500

=  420000 + 1500

= 421500

= 421500 nha bn, nhớ k mk nha

=421500