Question

Có ai giúp em câu này với em cảm ơn.

 

Answer 1

no bé ơi

Answer 2

Lời giải:

$\frac{1+14x}{5}=\frac{5-3x}{4}$

$\Rightarrow 4(1+14x)=5(5-3x)$

$4+56x=25-15x$

$56x+15x=25-4$

$71x=21$

$x=\frac{21}{71}$

Answer 3

c, \(\Rightarrow4+56x=25-15x\Leftrightarrow71x=21\Leftrightarrow x=\dfrac{21}{71}\)

Answer 4

\(\dfrac{1+14x}{5}=\dfrac{5-3x}{4}\)

\(\dfrac{4.\left(1+14x\right)}{20}=\dfrac{5.\left(5-3x\right)}{20}\)

\(4.\left(1+14x\right)=5.\left(5-3x\right)\)

\(4+56x=25-15x\)

\(56x+15x=25-4\)

\(71x=21\)

\(x=\dfrac{21}{71}\)

Answer 5

\(\Leftrightarrow\dfrac{4\left(1+14x\right)}{20}=\dfrac{5\left(5-3x\right)}{20}\)

\(\Leftrightarrow4\left(1+14x\right)=5\left(5-3x\right)\)

\(\Leftrightarrow4+56x=25-15x\)

\(\Leftrightarrow71x=21\Leftrightarrow x=\dfrac{21}{71}\)