Question

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

Answer 1

lỗi r

Answer 2

ok

 

Answer 3

20/23

Answer 4

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

\(\dfrac{23}{20}\)x=1

x=1:\(\dfrac{23}{20}\)

x=\(\dfrac{20}{23}\)

Answer 5

3/4x+2/5x=1
=>(3/4+2/5)x=1
=>23/20x=1
=>x=20/23

Answer 6

Answer 7

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

\(\Rightarrow x\left(\dfrac{3}{4}+\dfrac{2}{5}\right)=1\)

\(\Rightarrow x\left(\dfrac{15+8}{20}\right)=1\)

\(\Rightarrow\dfrac{23}{20}x=1\)

\(\Rightarrow x=\dfrac{20}{23}\)