`@` `\text {Ans}`
`\downarrow`
`2.x + 25 + 3.x = 50`
`\Rightarrow x.(2 + 3) = 50 - 25`
`\Rightarrow 5x = 25`
`\Rightarrow x = 25 \div 5`
`\Rightarrow x = 5`
Vậy, `x = 5.`
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