20

40

60

80

100

120

kb minh nha

10+10=20

20+20=40

30+30=60

40+40=80

50+50=100

60+60=120

10 + 10 = 20

20 + 20 = 40

30 + 30 = 60

40 + 40 = 80

50 + 50 = 100

60 + 60 = 120

x+20=40

x=40-20

x=20

x+20=40

x=40-20

x=20

k mk nhe

cam on nhiu

x + 20 = 40

        x = 40 - 20

        x = 20               ai k mk,mk k lại

X+20=40

X=40-20

X=20

Vaayj X=20

tk mk ddi mk tk rui do

x+10=20+40

x+10=60

x=50

k nha

X+10=20+40

X+10=60

X=60-10

X=50

x + 10 = 20 + 40

x + 10 = 60

x = 60 - 10

x = 50 

50+50+80+20+60+55+44+1+40=400 nha

\(50+50+80+20+60+55+44+1+40\)

\(=\left(50+50\right)+\left(80+20\right)+\left(60+40\right)+\left(55+44+1\right)\)

\(=100+100+100+100\)

\(=100.4\)

\(=400\)

nho gui tin nhan do

ok 

ko ghi lại đề 

= ( 50 + 50 ) + ( 80 + 20 ) + ( 60 + 40 ) + ( 55 + 44 + 1 ) 

=      100              100              100             100

=    100 x 4 

= 400

x+20=40

x=40-20

x=20

x+20=40

    x=40-20

    x=20

Vậy x=20

k có mình nhé bạn

x+20=40

x=40-20

x=20

tk nha

x=50 nha

k mk nha

mk k bn rùi đó!

x + 50 = 150 - 50

x + 50 = 100

x = 100 - 50

x = 50 

x + 50 = 150 - 50

x + 50 =    100

x        =  100 - 50

x        =     50

tk mk mk tk lại

x = 50 nha !

\(x+50=25\times4\)

\(x+50=100\)

            x = 100 - 50

            x = 50

nha

thank you 

x - 50 = 25 x 4

x + 50 = 100

x = 100 - 50

x = 50 

x + 30 = 40 x 2

 x + 30 = 80

          x = 80 - 30

          x = 50

x + 30 = 40 x 2

x + 30 = 80

x = 80 - 30

x = 50 

x+30=40x2

x+30=80

x=80-30=50

x=50

60 nha

5 x 5 x5 x 5 + 20 + 20 = 60

=60 nha bn

ủng hộ nha