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-472 + (235 - 28) - 35 - 350
= -472 + 207 - 35 - 350
= -265 - 35 - 350
= 300 - 350 = -50
![](https://rs.olm.vn/images/avt/0.png?1311)
-472 + (235 - 28) - (35 - 350)
= -472 + 235 - 28 - 35 + 350
= (-472 - 28) + (235 - 35) + 350
= -500 + 200 + 350
= -500 + 550
= 50
![](https://rs.olm.vn/images/avt/0.png?1311)
a: \(-472+\left(235-28\right)-\left(35-350\right)\)
\(=-472+235-28-35+350\)
\(=\left(-472-28\right)+\left(235-35\right)+350\)
=-500+350+200
=50
b: \(91\cdot172+91\cdot13-91\cdot85\)
\(=91\cdot\left(172+13-85\right)\)
\(=91\cdot100=9100\)
c: \(798-298:\left[19-2\left(5^2-22\right)^2\right]\cdot1^{2023}\)
\(=798-298:\left[19-2\left(25-22\right)^2\right]\)
\(=798-298:\left[19-2\cdot3^2\right]\)
\(=798-298:\left(19-18\right)\)
=798-298
=500
![](https://rs.olm.vn/images/avt/0.png?1311)
\(=\dfrac{2^{12}\cdot3^4\left(3-1\right)}{2^{12}\cdot3^6}-\dfrac{5^{10}\cdot7^3\left(1-7\right)}{5^9\cdot7^3+5^9\cdot7^3\cdot2^3}\)
\(=\dfrac{-2}{9}-\dfrac{5\cdot\left(-6\right)}{9}=\dfrac{-2-5\cdot\left(-6\right)}{9}=\dfrac{-2+30}{9}=\dfrac{28}{9}\)
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`-127 +208 -73 +92`
`= ( -127 -73) + (208+92)`
`=-200 +300`
`= 100`
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`2353 - ( 473 + 2153) + (-55+373)`
`= 2353 - 473 -2153 -55+373`
`= ( 2353 - 2153) + (-473 + 373) -55`
`=200 -100-55`
`=100-55`
`=45`
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
a. -37 + 54 + (-70) + (-163) +246 = [-37 + (-163) ] + (54+246) + (-70) = -200 + 300 + (-70) =100 + (-70) =30
b. -359 + 181 + ( -123 ) + 350 + ( -172 ) ={ [(-359 + 350 ) +181] + ( -172 ) } +( -123) = [ (-9 + 181) + ( -172 ) ] +( -123)= 172 +( -172)+(-123) = 0 + (-123) = -123
c.-69 + 53 + 46 + ( -94 ) + ( -14 ) + 78 = [-69 + 53+ ( -94 ) ]+ [ 46 +( -14 ) + 78 ] = -110 + 110 = 0
a: -127+208-73+92
\(=\left(-127-73\right)+\left(208+92\right)\)
\(=300-200=100\)
b: \(-46+391+246-691\)
\(=\left(-46+246\right)+\left(391-691\right)\)
\(=200-300=-100\)
c: \(-472+\left(235-28\right)-\left(35-350\right)\)
\(=-472+235-28-35+350\)
\(=\left(-472-28\right)+350+\left(235-35\right)\)
\(=-500+350+200=50\)
a) -127+208-73+92
=(−127−73)+(208+92)
=300−200
=100
b) −46+391+246−691
=(−46+246)+(391−691)
=200−300
=−100
c) −472+(235−28)−(35−350)
=−472+235−28−35+350
=(−472−28)+350+(235−35)
=−500+350+200
=50