Question

The sum of a number and twice a second number is 146. The difference of the first number and second number is 5. Find the two numbers.

Answer 1

Let the first number be A and the second number be B.
"The sum of a number and twice a second number is 146":
A + 2*B = 146 ---- (1)

"The difference of the first number and second number is 5":
A - B = 5 ------ (2)

2 equations and 2 unknowns A & B. Solve equations (1) and (2).

Answer 2

can you solve it @ranga

Answer 3

A + 2*B = 146 ---- (1)
A - B = 5 ---- (2)
Subtract (2) from (1) to get rid of A:

Answer 4

A + 2*B = 146 ---- (1)
A - B = 5 ---- (2)
----------------------- Subtract:
0 + 3B = 141
3B = 141
B = 141/3 = 47
Put B = 47 in (2):
A - 47 = 5
A = 5 + 47 = 52

The numbers are: 52 and 47.