A quantity with positive sign when taken to other side of the equation, then its sign becomes
+
x
÷
-
Age of a girl is 11 years. What is the age after x years.
11 + x
11 - x
11 x
3 x + 11= 5 x - 2 then x =
6
10
13
13/2
2 x + 5 = k then x =
k - 5
k - 5/2
k + 5/2
k/2 - 5
3 times a number exceeds 20 by 2. How do you represent this?
3 x +2 =20
3 x = 22
3 x = 16
3 x - 2 = 22
Sum of two numbers is 29. If one number is x then the other is
29+x
29 x
x-29
29-x
The length of a rectangle is 3 more than its breadth. If the perimeter is 30m then its length is
3 m
6 m
9 m
10 m
75o
70o
60o
65o
The sum of three times of a number and 8 is 50. Find the number?
16
14
12
17
Twice of a number plus 7 is 18. Write a simple equation for this
x + 7 = 18
x - 7 = 18
2 x - 7 = 18
2 x + 7 = 18
