Question

x: 2+xnhan3+x nhan4bang 15

Answer 1

x/2 + 3x + 4x = 15 

<=> x(1/2 + 3 + 4) = 15

<=> 15/2x = 15

<=> x = 15 : 15/2

<=> x = 2

Vậy x = 2

Answer 2

x : 2 + x × 3 + x × 4 =15

x × 1/2 + x × 3 + x × 4 =15

x × ( 1/2 + 3 + 4 ) =15

x × 15/2 =15

x=15:15/2

x=15×2/15

x=2

Answer 3

\(x:2+x\times3+x\times4=15\)

\(\Rightarrow x\left(\frac{1}{2}+3+4\right)=15\)

\(\Rightarrow x\times\frac{15}{2}=15\)

\(\Rightarrow x=\frac{15.2}{15}=2\)

Answer 4

tra loi

\(x=2\)

hok tot nha