हिंदी
सी.आई.एस.सी.ई.आईसीएसई ICSE Class 7

Solve: "X"/2 + "X" = 9 - Mathematics

Advertisements
Advertisements

प्रश्न

Solve: `"x"/2 + "x" = 9`

योग

उत्तर

`"x"/2 + "x" = 9`

`"x"/2 + "x"/1 = 9`

`("x + 2x")/2 = 9`

⇒ x + 2x = 2 × 9 

⇒ 3x = 18

⇒  x = `18/3 = 6`

∴ x = 6

shaalaa.com
Simple Linear Equations in One Variable
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 12: Simple Linear Equations (Including Word Problems) - Exercise 12 (C)

APPEARS IN

सेलिना Concise Mathematics [English] Class 7 ICSE
अध्याय 12 Simple Linear Equations (Including Word Problems)
Exercise 12 (C) | Q 1

संबंधित प्रश्न

Solve the following equation:

`("x"- 8)/5 = ("x" - 12)/9`


Solve the following equation:

5(8x + 3) = 9(4x + 7)


24 = y + 2y + 3 + 4y


Solve: `"3x"/4 + "4x" = 38`


Solve: `1/2"m" + 3/4"m" - "m" = 2.5`


Solve: `("3a" - 2)/7 - ("a" - 2)/4 = 2`


Solve: 2x + 20% of x = 12.1


One-fifth of a number is 5, find the number.


The difference between two numbers is 7. Six times the smaller plus the larger is 77. Find the numbers.


The length of a rectangular plot exceeds its breadth by 5 m. If the perimeter of the plot is 142 m, find the length and the breadth of the plot.


Solve the following equation for the unknown: `x/(2) + x/(4) + x/(8)` = 7


Solve the following equations for the unknown: `(3x - 5)/(7x - 5) = (1)/(9), x ≠ (5)/(7)`


Solve the following equations for the unknown: `2 + (3x - 2)/(3x + 2) = (3x + 2)/(x + 1)`


Solve the following equations: a(2x - b) - b(3x - a)+a(x + 1) = b(x + 5)


The sum of three consecutive natural numbers is 216. Find the numbers


Two numbers are in the ratio 11:13. If the smaller number is 286, find the bigger one.


A police car is ordered to chase a speeding car which is 5 km ahead and is travelling at an average speed of 80 km/h. The police car is running at an average speed of 100 km/h. How long it take for the police car to overtake the speeding car?


A tap can fill a tank in 12 hrs while another tap can fill the same tank in x hours. Both the taps if opened together fill the tank in 6 hrs and 40 minutes. Find the time the second tap will take to fill the tank.


There are certain benches in a classroom. If 4 students sit on each bench, three benches are left vacant and if 3 students sit on each bench, 3 students are left standing. What is the total number of students in the class?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×