Question

1)x-72:36=18                 2)x/3-1/4=-5/6                

Answer 1

x-72:36=18

x-2=18

x=18+2

x=20

Answer 2

1, x-72:36=18

x-2=18

=> x=20

2, \(\dfrac{x}{3}-\dfrac{1}{4}=\dfrac{-5}{6}\)

\(\dfrac{x}{3}=\dfrac{-7}{12}\)

12x= -21

->x= \(\dfrac{-21}{12}\)

Answer 3

x/3-1/4=-5/6

x/3=-5/6+1/4

x/3=-7/12

x=-7/12.3

x=-7/4

Answer 4

1) \(x-72:36=18\) 

=> x-2=18

x=20

2) \(\dfrac{x}{3}-\dfrac{1}{4}=\dfrac{-5}{6}\)

=> \(\dfrac{x}{3}=\dfrac{-7}{12}\)

=> 12x=-21

=> x=\(\dfrac{-21}{12}=\dfrac{-7}{4}\)

Answer 5

1) x-72:36=18

x-2=18

x=18+2

x=20

2) x/3-1/4= -5/6 

 x/3 = - 5/6 + 1/4
 x = - 7/12
 x = - (7/12) : 1/3
 x = - (7/12) . 3
x = - 21/12 
x = - 7/4

Answer 6

1)\(x-72:36=18\\ x-2=18\\ x=18+2\\ x=20\)

2)\(\dfrac{x}{3}-\dfrac{1}{4}=-\dfrac{5}{6}\\ \dfrac{x}{3}=-\dfrac{5}{6}+\dfrac{1}{4}\\ \dfrac{x}{3}=-\dfrac{10}{12}+\dfrac{3}{12}\\ \dfrac{x}{3}=\dfrac{7}{12}\\ =>\dfrac{4x}{12}=\dfrac{7}{12}\\ =>4x=7\\ x=7:4\\ x=\dfrac{7}{4}\)

Answer 7

Giải:

1) \(x-72:36=18\) 

             \(x-2=18\) 

                    \(x=18+2\) 

                    \(x=20\) 

2) \(\dfrac{x}{3}-\dfrac{1}{4}=\dfrac{-5}{6}\) 

            \(\dfrac{x}{3}=\dfrac{-5}{6}+\dfrac{1}{4}\) 

             \(\dfrac{x}{3}=\dfrac{-7}{12}\) 

\(\Rightarrow x=\dfrac{-7.3}{12}=\dfrac{-7}{4}\) 

Chúc bạn học tốt!

Answer 8

1) x - 72 : 36 = 18

x - 2 = 18

=> x = 20

2) x / 3=−7 / 

12 x =  -21

->x=