\(\left(x\times3+6\right):3=36\)

\(\Rightarrow x\times3+6=36\times3\)

\(\Rightarrow x\times3+6=108\)

\(\Rightarrow x\times3=108-6\)

\(\Rightarrow x\times3=102\)

\(\Rightarrow x=102:3\)

\(\Rightarrow x=34\)

Vậy \(x=34\)

~ Ủng hộ nhé 

( x * 3 + 6 ) : 3 = 36

   x * 3 + 6        = 36 x 3 

     x * 3 + 6      =     108

        x * 3         =      108 - 6

           x * 3      =      102 

                x       =   102 : 3 =  34

a 36x 6+ 36x4

=36x[6+4]

=36x10

=360

b 1368 x99+1368

=1368 x[99+1]

=1368x100

=136800

a) 36x6+36x4=36x(6+4)=36x10=360

b) 1368x99+1368=1368x(99+1)=1368x100=136800

Máy tính

36.28+36.82+64.69+64.41=36.(28+82)+64(69+41)=36.110+64.110=110.(36+64)=110.100=110000

a) 15 + 3 ( x - 1 ) = 36

3 ( x - 1 ) = 36 - 15

3 ( x - 1 ) = 21

x - 1 = 21 : 3

x - 1 = 7

x = 7+1

x = 8

  a) ( x - 3 ) x 5 = 21 Đáp án 7,2

b) 36 - 8 x x = 26 : đs 1,25         

c) 3- 7,2 = 1,56 Đs ...

d) x / 6 x 4 = 1,248 ĐS 1.872

Chi tiết hơn đc ko bạn 

a. x -6 = 35 : 7 + 42 : 6 

=> x - 6 = 5 + 7 

=> x -6 = 12 

=> x     = 12 + 6 

=> x     = 18 

Các câu sau tương tự, bạn học tốt nha! .-. 

a)x-6=5+7

x-6=12

x=6.

b)x-2=42-13

x-2=29

x=29+2

x=31

c)(36+81):x=13

117:x=13

x=117:13

x=9.

ko bt thì thôi muốn gây war hả bn

1) a) \(\frac{5454}{5757}-\frac{171717}{191919}=\frac{18\times3\times101}{19\times3\times101}-\frac{17\times10101}{19\times10101}=\frac{18}{19}-\frac{17}{19}=\frac{1}{19}\)

b) \(\frac{6}{5}\times\frac{7}{6}\times\frac{8}{7}\times....\times\frac{2021}{2020}=\frac{6\times7\times8\times...\times2021}{5\times6\times7\times...\times2020}=\frac{2021}{5}\)

2) \(\frac{1}{3}+\frac{1}{6}+\frac{1}{10}+...+\frac{1}{45}=2\times\frac{1}{6}+2\times\frac{1}{12}+2\times\frac{1}{20}+...+2\times\frac{1}{90}\)

\(=2\times\left(\frac{1}{6}+\frac{1}{12}+\frac{1}{20}+...+\frac{1}{90}\right)\)

\(=2\times\left(\frac{1}{2\times3}+\frac{1}{3\times4}+\frac{1}{4\times5}+...+\frac{1}{9\times10}\right)\)

\(=2\times\left(\frac{1}{2}-\frac{1}{3}+\frac{1}{3}-\frac{1}{4}+\frac{1}{4}-\frac{1}{5}+...+\frac{1}{9}-\frac{1}{10}\right)=2\times\left(\frac{1}{2}-\frac{1}{10}\right)=2\times\frac{2}{5}=\frac{4}{5}\)

b)Vì \(a-1< a+1\)

=> \(\frac{1}{a-1}>\frac{1}{a+1}\)

1/ a x b = 1/a - 1/b