x + 15 = 26
=> x = 26 - 15
=> x = 11
• Ai k mk thì mk k lại
x + 15 = 26
x = 26 - 15
x = 11
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mk nhầm cho mk trả lời lại
x + 15 = 26
x = 26 - 15
x = 11
\(x+15=26\Rightarrow x=26-15\Rightarrow x=11\)
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