-472 + (235 - 28) - 35 - 350

= -472 + 207 - 35 - 350

= -265 - 35 - 350

= 300 - 350 = -50

-50

bằng -650

-472 + (235 - 28) - (35 - 350)

= -472 + 235 - 28 - 35 + 350

= (-472 - 28) + (235 - 35) + 350

= -500 + 200 + 350

= -500 + 550

= 50

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

bài 1

86x34=2924

15x57=855

345xx27=9315

362x46=16652

\(=\dfrac{2^{12}\cdot3^4\left(3-1\right)}{2^{12}\cdot3^6}-\dfrac{5^{10}\cdot7^3\left(1-7\right)}{5^9\cdot7^3+5^9\cdot7^3\cdot2^3}\)

\(=\dfrac{-2}{9}-\dfrac{5\cdot\left(-6\right)}{9}=\dfrac{-2-5\cdot\left(-6\right)}{9}=\dfrac{-2+30}{9}=\dfrac{28}{9}\)

`-127 +208 -73 +92`

`= ( -127 -73) + (208+92)`

`=-200 +300`

`= 100`

__

`2353 - ( 473 + 2153) + (-55+373)`

`= 2353 - 473 -2153 -55+373`

`= ( 2353 - 2153) + (-473 + 373) -55`

`=200 -100-55`

`=100-55`

`=45`

$-127+208-73+92$

$=(-127-73)+(208+92)$

$=-200+300$

$=100$

__

$2353-(473+2153)+(-55+373)$

$=2353-473-2153-55+373$

$=(2353-2153)+(-473+373)-55$

$=200-100-55$

$=100-55$

$=45$

a, = (208 +92) - (127 +73) = 300-200=100

b, = (2353 -2153) - (473-373) - 55 = 200-100-55=45

=-2456+208-46+92

=-2248-46+92

=-2294+92

=-2202

Tick nha

-2456-(-208+46)-(-92)=-2456+208-46+92=(-2456-46)+(208+92)=-2410+300=-2110

- 2456 + 162 + 92 = - 2202

2 + 4 = 6 ; 4 - 2 = 2 => 2 + 4 = 62

10 + 13 = 23 ; 13 - 10 = 3 => 10 + 13 = 233

59 + 73 = 132 ; 73 - 59 = 14 => 59 + 73 = 13214

127 + 246 = ?-----------------------------

127 + 246 = 373 ; 246 - 127 = 119 => 127 + 246 = 373119

5,055...X_X