46: 24 + 8: 24 = (46 +8): 24 = 54 : 24 = 2,25.

=24+1+8

=25+8

=33

=(24+8)-(7+8)

=32-15

=17

24 + 8 - 7 + 8 = ( 24 -7 ) + 8

                      = 14 + 8

                      = 22

\(\frac{5x8x24x27}{8x15x9x7}=\frac{5x8x24x9x3}{8x5x3x9x7}=\frac{24}{7}\)

Chúc bạn học tốt.

😁😁😁

Ta tính thuận tiện bằng cách phân tích các thừa số để bỏ thừa số chung:

\(\frac{5\text{x}8\text{x}24\text{x}27}{8\text{x}15\text{x}9\text{x}7}=\frac{5\text{x}8\text{x}3\text{x}8\text{x}3\text{x}3\text{x}3}{8\text{x}3\text{x}5\text{x}3\text{x}3\text{x}7}\)

\(=\frac{8\text{x}3}{7}\)

\(=\frac{24}{7}\)

a,345x(24+75+1)=345x100=34500

b,(72x1567):8=1567x(72:8)=1567x9=14103

a.345x24+345x75+345

=345x24+345x75+345x1

=345x(24+75+1)

=345x100

=34500

b.(72x1567):8

=1567x(72:8)

=1567x9

=14103

=24*(7+3)

=24*10

=240

24 * 7 + 24 * 3 = 24 * ( 7 + 3 ) = 24 * 10 = 240 

24 x 7 + 24 x 3 

24 x ( 7 + 3 )

24 x 10

240

\(\dfrac{7}{5}\times\dfrac{11}{24}\times\dfrac{5}{7}\times\dfrac{24}{55}\\ =\left(\dfrac{7}{5}\times\dfrac{5}{7}\right)\times\left(\dfrac{11}{24}\times\dfrac{24}{55}\right)\\ =1\times\dfrac{1}{5}\\ =\dfrac{1}{5}\)

\(\dfrac{7x11x5x24}{5x24x7x55}\)=\(\dfrac{11}{55}\)=\(\dfrac{1}{5}\)

= (7/5 x 5/7) x (11/24 x 24/55)

= 1 x 1/5

= 1/5

24 x 55 + 12 x 88 + 24

= ( 24 x 55 ) + ( 12 x 88 ) + 24

= 1320 + 1056 + 24

= 2376 + 24

= 2400

_HT_

\(24\cdot55+12\cdot88+24\)

\(\Leftrightarrow\left(24\cdot55\right)+\left(24\cdot88:2\right)+24\)

\(\Rightarrow\left(24+55\right)+\left(24\cdot44\right)+24\)

\(\Leftrightarrow24\left(55+44+1\right)\)

\(\Leftrightarrow24\cdot100\)

\(\Leftrightarrow2400\)

a: Ta có: 24+35+76+65+22

=(24+76)+(35+65)+22

=222

b: Sửa đề: \(24\cdot35+24\cdot65\)

=24x100

=2400