Question

x + 90 = 90 + 30

 

 

 

Answer 1

x + 90 = 90 + 30

x + 90 = 120

x         = 120 - 90

x         = 30

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Answer 2

x + 90 = 90  + 30

x + 90 = 120

x         = 120 - 90

x         = 30

Answer 3

x + 90 = 90 + 30

x + 90 = 120

x = 120 - 90

x = 30

Answer 4

x + 90 = 90 + 30

x + 90 = 120

x        = 120 - 90

x        = 30

Vậy x = 30

Answer 5

x + 90 = 90 + 30

nên : x = 30 ( bớt 2 vế đi 90 ) 

Đúng 100 %

Answer 6

\(x+90=90+30\)

\(x+90=120\)

           \(x=120-90\)

           \(x=30\)

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thank you 

Answer 7

Answer 8

x+90=90+30

x+90=120

x=120-90

x=30

Answer 9

x+90=120

x=120-90

x=30