Question

x nhan 5 +3/4 nhan x =87,4

Answer 1

\(x\cdot5+\frac{3}{4}\cdot x=87,4\)

\(x\cdot\left[5+0,75\right]=87,4\)

\(x\cdot5,75=87,4\)

\(x=87,4:5,75\)

\(x=1,52\)

Answer 2

\(x.5+\frac{3}{4}.x=87,4\)

x.5+0,75.x= 87,4

x.(5+0,75)=87,4

x.5,75=87,4

x= 87,4:5,75

x= 15,2

Vậy x=15,2

Dấu . là dấu nhân nhé

Answer 3

x*5+3/4*x=87.4

x*(5+3/4)=87.4

x*23/4=87.4

x*5.75=87.4

x         =87.4 chia 5.75

x         =15.2

Vậy x=15.2

k mình nhé