134 = x.2=45

x=45

4.\(x\) + 2.[3.\(x\) - 11] = 134

4.\(x\) + 6.\(x\) - 22 = 134

10\(x\)                 = 134 + 22

 10\(x\)                = 156

     \(x\)                = 156 : 10

      \(x\)                = 15,6

Lời giải:
$4x+2(3x-11)=134$

$4x+6x-22=134$

$10x-22=134$

$10x=134+22=156$

$x=156:10=15,6$

a: =>7(135:x-13)=14

=>135:x-13=2

=>135:x=15

=>x=9

b: =>11x-66-4x=11

=>7x=77

=>x=11

\(120+\left(135:x-13\right)\cdot7=134\)

\(\Rightarrow\left(135:x-13\right)\cdot7=134-120\)

\(\Rightarrow\left(135:x-13\right)\cdot7=14\)

\(\Rightarrow135:x-13=14:7\)

\(\Rightarrow135:x=2+13\)

\(\Rightarrow135:x=15\)

\(\Rightarrow x=135:15\)

\(\Rightarrow x=9\)

_______________

\(11\cdot\left(x-6\right)=4\cdot x+11\)

\(\Rightarrow11\cdot x-66=4\cdot x+11\)

\(\Rightarrow11\cdot x-4\cdot x=11+66\)

\(\Rightarrow7\cdot x=77\)

\(\Rightarrow x=77:7\)

\(\Rightarrow x=11\)

\(a,120+\left(135\div x-13\right)\times7=134\)

\(\Rightarrow\left(135\div x-13\right)\times7=14\)

\(\Rightarrow135\div x-13=2\)

\(\Rightarrow135\div x=15\)

\(\Rightarrow x=135\div15=9\)

\(b,11\times\left(x-6\right)=4\times x+11\)

\(\Rightarrow11\times x-66=4\times x+11\)

\(\Rightarrow11\times x-4\times x=66+11\)

\(\Rightarrow\left(11-4\right)\times x=77\)

\(\Rightarrow7\times x=77\Leftrightarrow x=11\)

a) y . 134 - y . 24 - y . 10 = 710 000

\(\Rightarrow\) y . ( 134 - 24 - 10 ) = 710 000

\(\Rightarrow\) y . 100 = 710 000

y = 710 000 : 100

y = 71 000

\(a,x-\dfrac{1}{4}=\dfrac{7}{2}.\dfrac{-3}{5}\\ \Rightarrow x-\dfrac{1}{4}=\dfrac{-21}{10}\\ \Rightarrow x=\dfrac{-21}{10}+\dfrac{1}{4}\\ \Rightarrow x=\dfrac{-37}{20}\\ b,\dfrac{x}{134}=\dfrac{9}{7}.\dfrac{5}{-11}\\ \Rightarrow\dfrac{x}{134}=\dfrac{-45}{77}\\ \Rightarrow x=\dfrac{-45}{77}.134\\ \Rightarrow x=\dfrac{-6030}{77}\)

\(x-\dfrac{1}{4}=\dfrac{7}{2}\cdot\dfrac{-3}{5}\)

\(x-\dfrac{1}{4}=\dfrac{-21}{10}\)

\(x=\dfrac{-21}{10}+\dfrac{1}{4}\)

\(x=\dfrac{-37}{20}\)

b ) \(\dfrac{x}{134}=\dfrac{9}{7}\cdot\dfrac{5}{-11}\)

      \(\dfrac{x}{134}=\dfrac{9}{7}\cdot\dfrac{-5}{11}\)

       \(\dfrac{x}{134}=\dfrac{-45}{77}\)

       \(x=\dfrac{-45}{77}\cdot134\)

       \(x=-\dfrac{6034}{77}\)

\(\frac{x}{134}=\frac{9}{7}\cdot\frac{5}{-11}\)

\(\frac{x}{134}=\frac{9\cdot\left(-5\right)}{7\cdot11}\)

\(\frac{x}{134}=\frac{-45}{77}\)

741

741 nha bạn, Yêu bạn nhiều, câu hỏi này đã quá lâu, ko ai để ý, mk còn bị âm điểm nữa. Mong bạn ủng hộ mk.

741 

=28,8x(71,2+28,2)x134x(1,1-0,1-1)
= ...........................x134x0
=..............x0
=0