25 x 20,13 + 4 x 20,13 - 2013 x 20,33 + 2013 x 20,04

= 20,13 x ( 25+4) - 2013 x ( 20,33 - 20,04)

= 20,13 x 29 - 2013 x 0,29

= 20,13 x 100 x 0,29 - 2013 x 0,29

= 2013 x 0,29 - 2013 x 0,29

= 0

Tất cả là = 0 

~ HOK TỐT ~

Ta có:25×20,13+4×20,13-2013×20,33+2013×20,04

         =503,25+80,52-40924,29+40340,52

         =0

Mk lm chuẩn trên chuẩn đó,k mk nhé!!!

a. 20,13 x 84,5 x 20,13

= 20,13 x 84,5 x 20,13 x 1

= 20,13 x ( 84,5 + 1 )

= 20,13 x 85,55

b. 4,5 x 11/5 + 5,5 x 11/5

= ( 4,5 + 5,5 ) x 11/5

= 10 x 11/5

= 22

a]20,13 * 84,5 * 20,13 = 20,13 * 2 * 84,5

                                 = 20,13 * 169

                                 = 3401,97

b] 4,5 * 11/5 + 5,5 * 11/5 = 11/5 * [4,5 + 5,5]

                                        = 2,2 * 10

                                        = 22

20,13 x104 - 20,13 :0,25

= 20,13 x 104 - 20,13 x 4

= 20,13 x ( 104 - 4 )

= 20,13 x 100

= 2013

_HT_

=20,13x104-20,13.4

=20,13x(104-4)

=20,13x100

=2013

TL:

bằng 2013

k cho mk nhé!

~HT~

\(20,13\cdot104-20,13:0,25\)

\(=20,13\cdot104-20,13\cdot4\)

\(=20,13\left(104-4\right)\)

\(=20,13\cdot100=2013\)

đầy đủ phần ngoặc hay gì đó

\(\dfrac{11}{2}\): \(\dfrac{1}{4}\) \(\times\) \(\dfrac{5}{3}\)

= \(\dfrac{11}{2}\) \(\times\) \(\dfrac{4}{1}\) \(\times\) \(\dfrac{5}{3}\)

= 22 \(\times\) \(\dfrac{5}{3}\)

= \(\dfrac{110}{3}\)

\(\dfrac{5}{2}-\dfrac{1}{4}+\dfrac{5}{3}\)

= \(\dfrac{30}{12}-\dfrac{3}{12}+\dfrac{20}{12}\)

= \(\dfrac{7}{12}\) 

\(\dfrac{14}{5}\times\dfrac{2}{3}\)+ 5

= \(\dfrac{28}{15}\) + 5

= \(\dfrac{28}{15}\) + \(\dfrac{75}{15}\)

= \(\dfrac{103}{15}\)