\(\dfrac{6}{5}\times43+\dfrac{6}{5}+\dfrac{6}{5}\times56\)

\(=\dfrac{6}{5}\times\left(43+1+56\right)\)

\(=\dfrac{6}{5}\times100=120\)

6/5 x 43+6/5+6/5 x 56

= 6/5 x 43+6/5 x 1+6/5 x 56

= 6/5 x ( 43+1+56)

= 6/5 x 100

= 600/5 = 120

Tk ạ! Thank you!

4kg650g=4650g

4kg650g= 4650 g nha! Tk nha!

Hoa ăn hết 4/9 số bánh

hoa da an 4 phan nha ma dot vai cut

3,6x21,3+7,4x21,3-21,3

=21,3x(3,6+7,4-1)

=21,3x10=213

3,6x21,3+7,4x21,3-21,3

=21,3x(3,6+7,4-1)

=21,3x10

=213

\(3,6\times21,3+7,4\times21,3-21,3\)

\(=3,6\times21,3+7,4\times21,3-21,3\times1\)

\(=21,3\times\left(3,6+7,4-1\right)\)

\(=21,3\times10\)

\(=213\)

3,6x21,3+7,4x21,3-21,3

=21,3x(3,6+7,4-1)

=21,3x10=213

Giá tiền 1kg xoài hôm qua là:

\(80000:\dfrac{5}{2}=32000\left(đồng\right)\)

Giá tiền 1kg xoài hôm nay là 200000:8=25000(đồng)

=>Giá tiền 1kg xoài hôm nay rẻ hơn hôm qua:

32000-25000=7000(đồng)

484; 804;482;..

.4 số nha ^^^^

\(4m^2=400dm^2\)

\(9dm^230cm^2=930cm^2\)

\(16m^2=16000000mm^2\)

\(300cm^2=3dm^2\)

\(21dm^2=2100cm^2\)

\(90000cm^2=900dm^2\)

\(3m^226dm^2=326dm^2\)

\(4500mm^2=45cm^2\)

\(8cm^28mm^2=808mm^2\)

\(7m^250cm^2=70050cm^2\)

4m2 = 400dm2                                    9dm2 30cm2 = 930cm2

16m2 = 16000000mm2                       300cm2 = 3dm2

21dm2 = 2100cm2                               90000cm2 = 900dm2

3m2 26dm2 = 326dm2                         4500mm2 = 45cm2

8cm2 8mm2 = 808mm2                       7m2 50cm2 = 70050cm2

\(\dfrac{-15}{x}=\dfrac{3}{4}\)

=>\(x=\dfrac{-15\cdot4}{3}=-\dfrac{60}{3}=-20\)