Câu 12: Tìm X (146+ X) × 7 = 9135 ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. .............................................

2 câu trả lời

$(146 +x) × 7 = 9135$

$⇒ 146 +x = 1305$

$⇒ x = 1305 -146$

$⇒ x = 1159$

$Vậy$ $x = 1159$

 

(146+x)×7=9135

146+x=9135 : 7

146+x=1305

x=1305 - 146

x=1159

Vậy x=1159.

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