Question

Giải giúp mình bài này với ạ.

X x/15 (Đây là hỗn số nha- x và x phần 15 đó) =112/5

Giúp mình nhanh nha. Cảm ơn các bạn nhìu!!

Answer 1

\(x\dfrac{x}{15}=\dfrac{112}{5}\)

\(\dfrac{x.15+x}{15}\)=\(\dfrac{112}{5}\)

\(\dfrac{x\left(15+1\right)}{15}=\dfrac{112}{5}\)

\(\dfrac{x.16}{15}=\dfrac{112}{5}\)

=> \(x.16.5=15.112\)

\(x.80=1680\)

=> \(x=21\)

Answer 2

\(x\dfrac{x}{15}=\dfrac{112}{5}\)

\(\dfrac{x.15+x}{15}=\dfrac{112}{5}\)

\(\dfrac{x\left(15+1\right)}{15}=\dfrac{112.3}{5.3}\)

\(\dfrac{x.16}{15}=\dfrac{366}{15}\)

\(\Rightarrow x.16=366\)

\(\Rightarrow x=21\)

Answer 3

\(x\dfrac{x}{15}\)=\(\dfrac{112}{5}\)

\(\dfrac{x.15+x}{15}=\dfrac{336}{15}\)

\(\dfrac{16x}{15}=\dfrac{336}{15}\)

⇒16x=336

x=336/16

x=21

Answer 4

Ta có:

\(x\dfrac{x}{15}=\dfrac{112}{5}\)

⇒ \(\dfrac{x.15+x}{15}=\dfrac{112}{5}\)

⇒ \(\dfrac{16x}{15}=\dfrac{336}{15}\)

⇒ 16x= 336

⇒ x= 21

Answer 5

\(x\dfrac{x}{15}=\dfrac{112}{5}\)

\(\Rightarrow\dfrac{x\cdot15+x}{15}=\dfrac{112}{15}\)

\(\Rightarrow\dfrac{x\left(15+1\right)}{15}=\dfrac{112}{15}\)

\(\Rightarrow\dfrac{x\cdot16}{15}=\dfrac{112}{15}\)

\(\Rightarrow16x=112\)

\(\Rightarrow x=112:16\)

\(\Rightarrow x=7\)

Vậy x=7

Answer 6

\(x\dfrac{x}{5}=\dfrac{112}{5}\)

\(\Rightarrow\dfrac{16x}{15}=\dfrac{112}{15}\)

\(\Rightarrow16x=112\)

\(\Rightarrow x=112:16\)

\(\Rightarrow x=7\)

Vậy x=7