Question

x+3    1

__ =  _

15      3

GIUP MINH VS 

MINH DANG CAN GAP

 

Answer 1

x+3 = 1/3*15 = 5

<=>x = 5 - 3 = 2

Vậy x = 2

Answer 2

x+3/15=1/3

=> x+3.3=15.1

x+3.3=15

x+3=15:3

x+3=5

x=5-3

x=2

Answer 3

(x+3)/15=1/3

=>(x+3)/15=5/15

=>x+3=5

=>x    =5-3

=>x    =2

Answer 4

(x+3).3 = 1.15

(x+3).3=15

3.x+3.3=15

3.x+9=15

3.x= 15-9

3.x=6 

x=6:3

x=2

Answer 5

\(\frac{x+3}{15}=\frac{1}{3}\)

\(\Rightarrow\frac{x+3}{15}=\frac{5}{15}\)

\(\Rightarrow x+3=5\)

\(\Rightarrow x=5-3\)

\(\Rightarrow x=2\)