13x11+14x11+15x11

=(13+14+15)x11

=42x11

=462

13 x 11 + 14 x 11 + 15 x 11

= 11 x ( 13 + 14 + 15 )

= 11 x 42

= 462

~ Ủng hộ nhé ~

= (13+14+15)x11

=42 x11

=462

11 x 11 x 11=1331

1331 ĐÓ Bạn ạ nhớ chọn nhé

1331 đó bạn

\(\left(2.x-15\right).11=11\)

\(\left(2.x-15\right)=11:11\)

\(2.x-15=1\)

\(2.x=1+15\)

\(2.x=16\)

      \(x=16:2\)

 \(x=8\)

Vậy \(x=8\)

Chúc bạn học tốt !!!

( 2x - 15 ) 11 = 11

2x - 15 = 11 : 11

2x - 15 = 1

2x = 1 + 15

2x = 16

x = 16 : 2

x = 8

Vậy x = 8

(2.x-15)=11:11

(2.x-15)=1

       2.x=1+15

       2.x=16

          x=16:2

          x=8

Vậy x=8

ket qua la 0

mik tra loi truoc nha

   ( 7,5 x 18,3 + 26,4 x 18,3 ) x ( 47 x 11 - 4700 x 0,1 - 47 )

= ( 7,5 x 18,3 + 26,4 x 18,3 ) x (  517    -    470    -    47  )

= ( 7,5 x 18,3 + 26,4 x 18,3 ) x (       47     -       47     )

=   7,5 x 18,3 + 26,4 x 18,3 x 0

= 0 

bằng 0 nha bạn 

a00 x 11=aa00    

b0 x 11 =  bb0 

aa00+ bb0    = 6710 => 0+b =1=> b= 1

aa00+ 110    = 6710 =>  aa00   = 6710 -110=6600 => a=6

Vậy b =1 ; a =6

\(\dfrac{11}{8}:x-\dfrac{2}{5}+-\dfrac{1}{6}=-\dfrac{1}{5}\\ =>\dfrac{11}{8}:x-\dfrac{2}{5}=-\dfrac{1}{5}-\left(-\dfrac{1}{6}\right)\\ =>\dfrac{11}{8}:x-\dfrac{2}{5}=-\dfrac{1}{5}+\dfrac{1}{6}\\ =>\dfrac{11}{8}:x-\dfrac{2}{5}=-\dfrac{6}{30}+\dfrac{5}{30}\\ =>\dfrac{11}{8}:x-\dfrac{2}{5}=-\dfrac{1}{30}\\ =>\dfrac{11}{8}:x=-\dfrac{1}{30}+\dfrac{2}{5}\\ =>\dfrac{11}{8}:x=-\dfrac{1}{30}+\dfrac{12}{30}\\ =>\dfrac{11}{8}:x=\dfrac{11}{30}\\ =>x=\dfrac{11}{8}:\dfrac{11}{30}\\ =>x=\dfrac{11}{8}.\dfrac{30}{11}\\ =>x=\dfrac{30}{8}\\ =>x=\dfrac{15}{4}\\ \dfrac{4}{7}x-\dfrac{1}{3}x+\left(-\dfrac{16}{21}\right)=-\dfrac{2}{3}\\ =>\left(\dfrac{4}{7}-\dfrac{1}{3}\right)x=-\dfrac{2}{3}-\left(-\dfrac{16}{21}\right)\\ =>\left(\dfrac{12}{21}-\dfrac{7}{21}\right)x=-\dfrac{2}{3}+\dfrac{16}{21}\\ =>\dfrac{5}{21}x=-\dfrac{14}{21}+\dfrac{16}{21}\\ =>\dfrac{5}{21}x=\dfrac{2}{21}\\ =>x=\dfrac{2}{21}:\dfrac{5}{21}\)

\(=>x=\dfrac{2}{21}.\dfrac{21}{5}\\ =>x=\dfrac{2}{5}\\ -\dfrac{11}{12}x+\dfrac{15}{2}\left(x+-\dfrac{1}{5}\right)=\dfrac{67}{8}\\ =>-\dfrac{11}{12}x+\dfrac{15}{2}.x-\dfrac{1}{5}=\dfrac{67}{8}\\ =>\left(-\dfrac{11}{12}+\dfrac{15}{2}\right)x=\dfrac{67}{8}+\dfrac{1}{5}\\ =>\left(-\dfrac{11}{12}+\dfrac{90}{12}\right)x=\dfrac{335}{40}+\dfrac{8}{40}\\ =>\dfrac{79}{12}x=\dfrac{343}{40}\\ =>x=\dfrac{343}{40}:\dfrac{79}{12}\\ =>x=\dfrac{343}{40}.\dfrac{12}{79}\\ =>x=\dfrac{343.12}{40.79}\\ =>x=\dfrac{343.3}{10.79}\\ =>x=\dfrac{1029}{790}\)

Kết quả là 3712570597955237990400

Bài chị tự chế à

đố lung tung

110

132

156

11x10=110

12x11=132

13x12=156

11 x 10 = 110

12 x 11 = 132

13 x 12 = 156

Mk nhanh nhất nè bn !