Which one of the following is the value of the variable in equation x + 3 = 8 ?

If a, b, c refer to any number and a = b,
(i) ac = bc
(ii) a + c = b + c
(iii) a – c = b - c
Which one is correct ?

The subtraction of two numbers is 30 and the greater number is 4 times the smaller number. What is the smaller number ?

Amount of Mack's money is twice the amount of the Marrie's money. They have together 30 taka in total. How much money does Marie have ?

In the equation 6x + 3 = 9
(i) Variable is 1
(ii) Exponent of variable is 1
(iii) Value of variable is 2
Which one is correct ?

Sum of two natural numbers is 24. Twice of which of the following numbers is added to 6, the sum will be the same ?

Bimal bought an exercise book and a pencil for 30 taka from a shop. The pencil costs x taka, and the exercise book costs twice the cost of the pencil. Look at the following data:
(i) Exercise book costs 3x taka.
(ii) By the question, the equation is x + 2x =30.
(iii) If the exercise book costs 20 taka, the pencil costs 10 taka.
According to the above data, which one of the following is true?

What is the perimeter of a rectangular garden having length of x metre and breadth of y metre ?

Sum of two natural numbers is 24. If one number is 8, which one of the following is the other number ?

Which one of the following is the root of the equation 4x = 8?