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Tìm y:
\(a,y+847\times2=1953-74\\ y+847\times2=1879\\ y+1694=1897\\ y=1897-1694\\ y=185\\ b,y:\left(7\times18\right)=5839+8591\\ y:126=14430\\ y=14430\times126\\ y=1818180.\)
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17464 - 17464 : 74 - 74 x 158
= 158 x ( 17464 - 17464 ) : ( 74 - 74 )
= 158 x 0 : 0
= 0 x 0
= 0
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a: \(17464-17464:74-74\cdot158\)
\(=17464\cdot\left(1-\dfrac{1}{74}\right)-74\cdot158\)
\(=17464\cdot\dfrac{73}{74}-74\cdot158\)
\(=5536\)
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195 : \(\dfrac{3}{5}\)= 325
54 : \(\dfrac{3}{8}\)= 144
\(\dfrac{9}{7}\) : \(\dfrac{2}{7}\) = \(\dfrac{9}{2}\)
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(\(x\) + 5) + (\(x\) + 10) + (\(x\) + 15) + (\(x\) + 20) = 74
\(x\) + 5 + \(x\) + 10 + \(x\) + 15 + \(x\) + 20 = 74
(\(x\) + \(x\) + \(x\) + \(x\)) + (5 + 10 + 15 + 20) = 74
4\(x\) + 50 = 74
4\(x\) = 74 - 50
4\(x\) = 24
\(x\) = 24: 4
\(x\) = 6