The sum of a number and 9
is ̶ 2. Find the number.
a) 7
b) 11
c) ̶ 11
d) 18
Nadia is five years older than
her brother Najam. The sum of their ages is 37. How old is Nadia?
a) 42
b) 32
c) 21
d) 17
Solution:Suppose age of Najam= x
Age of Nadia = x + 5
x + (x + 5) = 37 2x + 5 = 37
2x = 32 x = 16
Age of Nadia = x + 5 = 16 + 5= 21
Which value is the solution of 2x+1=7?
a) 6
b) 5
c) 4
d) 3
Solution:If we put x= 3
2x+1=7 2(3)+1=7 6+1=7 7=7
