Let the ages of the three friends be represented by ( a ), ( a + 2 ), and ( a + 4 ), where ( a ) is the age of the youngest friend. The sum of their ages can be expressed as ( a + (a + 2) + (a + 4) = 3a + 6 ). Thus, the sum of the ages of the friends in terms of ( a ) is ( 3a + 6 ).
R was used for Real numbers. Q, for rational numbers refers to the fact that it must be possible to express them as quotients [of two integers].
29/125
0.47 = 47 / 100
270421/10000 = 27.0421
They are called a rational number.
6
R was used for Real numbers. Q, for rational numbers refers to the fact that it must be possible to express them as quotients [of two integers].
29/125
2/3
431/100
341/100
0.47 = 47 / 100
75 = 40 + 35
270421/10000 = 27.0421
1 + 74
They are called a rational number.
One example is 5123/1000.