ai nhanh mik tick

    [ 256,8 - 146,4] : 48 + 9,7 

=   110,4  : 48 + 9,7

= 2,3 + 9,7

= 12

a) 110, 4 : 48 - 9 ,7 

= 2,3  - 9,7 = - 7,4

b) 4,32 : 2,4 x 1 , 5

= 1,8 x 1 , 5 =2,7

a) ( 256,8 - 146,4): 48 - 9,7

 =110,4 : 48 - 9,7

=2,3 - 9,7

=-7,4

b) 4,32: ( 0,73 + 1,67) x 1,5

=4,32 : 2,4 x 1,5

=1,8 x 1,5

=2,7

ta có 48=2⁴.3

72=2³.3²

ƯCLN(48,72)=3.2³=24

ƯC(48,72)=Ư(24)={1;2;3;4;6;8;12;24}

1.          48= 2⁴ .3     

       2.          72= 2³.3²

\(\dfrac{x\times48-120\times48}{72\times48-22\times48}=1\\ \dfrac{\left(x-120\right)\times48}{\left(72-22\right)\times48}=1\\ \dfrac{x-120}{50}=1\\ \dfrac{x-120}{50}=\dfrac{50}{50}\\ x-120=50\\ x=50+120\\ x=170\)

Tính bằng cách thuận tiện nhất

9,7 x 2,8 +9,7x6,2+9,7 

=9,7x(2,8+6,2+1)

=9,7x10

=97 

giúp mình với,mình đang cần gấp

a: \(n\in\left\{1;2;3;4;6;12\right\}\)

\(\left(-48\right).54+\left(-48\right).46+480\)

\(=\left(-48\right).\left(54+46\right)+480\)

\(=\left(-48\right).100+480\)

\(=-4800+480\)

\(=-4320\)

_________

\(900:\left[50+\left(7^2-8.3\right).2\right]+2022^0\)

\(=900:\left[50+\left(49-24\right).2\right]+1\)

\(=900:\left[50+25.2\right]+1\)

\(=900:\left[50+50\right]+1\)

\(=900:100+1\)

\(=9+1=10\)

= (-48) . (54+46) + 480                            = 

= (-48) . 100 + 480

= (-4800) + 480

= - 4320

48x72+72x18+8x9x34

=48x72+72x18+(8x9)x34

=48x72+72x18+72x34

=72x(48+18+34)

=72x100

=7200

48 x 72 + 72 x 18 + 8 x 9 x 34

= 48 x 72 + 18 x 72 + 34 x 72

= ( 48 + 18 + 34 ) x 72

= 100 x 72

= 7200

72 x 48 + 74 x 48 + 72 x 52 + 28 x 52 

= 48 x ( 72 + 74 ) + 52 x ( 72 + 28 ) = 48 x 146 + 52 x 100 = 7008 + 5200 = 12208