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\(\text{a, 54 + (- 37 + 10 - 54 + 67)}.\)
\(=54-37+10-54+67=\left(54+54\right)+\left(-37+67\right)+10=30+10=40.\)
\(\text{b, - 2021 + (- 569) + (- 201) + (+ 469) + 301}.\)
\(=-2021-569-201+469+301=-2021+\left(-569+469\right)+\left(-201+301\right)=-2021-100+100=-2021.\)
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\(\frac{301^{201}.301^{100}}{201^{201}}=\left(\frac{301}{201}\right)^{201}.301^{100}\)=A
\(\frac{201^{101}.201^{100}}{101^{101}}=\left(\frac{201}{101}\right)^{101}.201^{100}\)=B
=> A>B
MÌNH CHỈ MỚI HỌC LỚP 6 THÔI
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b: \(\left(-44\right)+25+\left(-15\right)+44\)
\(=\left(-44+44\right)+\left(25-15\right)\)
=0+10
=10
c: \(201+\left(-197\right)+\left(-201\right)\)
\(=\left(201-201\right)+\left(-197\right)\)
=0-197
=-197
d: \(191+\left(-200\right)+91\)
\(=191+91-200\)
\(=91-9\)
=82
d: \(\left(-158\right)+\left[\left(-23\right)+158\right]\)
\(=-158-23+158\)
\(=\left(-158+158\right)-23\)
=0-23
=-23
e: \(\left(-2021\right)-\left[\left(-2021\right)+25\right]\)
\(=-2021+2021-25\)
=0-25
=-25
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(-2012) + (-596) + 496 + (-201) + 301
= [(-2012) + (-596) + (-201)] + (496 + 301)
= (-2809) + 797
= -2012
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-2021 + (569) + (-201) + (-469) + 301
= -2021 + ( 569 - 469 ) + ( 301 - 201)
= -2021 + 100 + 100
= -2021 + 200
= -1821