x + 150 = 450 + 100
K
Khách
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15 tháng 1 2017
x + 150 = 500
x = 500 - 150
x = 350
Vậy x = 350
K mk nha
IH
4
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TD
8
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TD
13
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15 tháng 1 2017
70 + x = 100
x = 100 - 70
x = 30
tk nha mk tk bn rồi đó
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KK
6
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DC
2
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x=400
x+150=550
x=550-150
x=400
nhớ k cho mik nha!!!