Question

x + 20 = 50 + 80

Answer 1

\(x+20=50+80\)

\(x+20=130\)

           \(x=130-20\)

           \(x=110\)

Answer 2

x+20=50+80

x-20=130

x=130-20

x=110

Answer 3

x + 20 = 50 + 80

x + 20 = 130

x        = 130 - 20

x        = 110

Answer 4

x + 20 = 130

x = 130 - 20

x = 110

Answer 5

x + 20 = 50 + 80

x + 20 = 130

x = 130 - 20

x = 110

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Answer 6

x+20=50+80

x+20=130

     x =130-20

     x =110

Answer 7

x + 20 = 50 + 80

x + 20 = 130

x = 130 - 20

x =110

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Answer 8

110 nha

Answer 9

x + 20 = 50 +80

x + 20 = 130

x         = 130 -20

x         = 90

Answer 10

X+20=50+80

X+20=130

X=130-20

X=110

Answer 11

x+ 20 = 50 + 80 

=> x+ 20 = 130 

=> x = 110 

đáp số x= 110