Question

If 3x +2y = 13 and 3x -2y = 5, then the value of x + y is :
(a) 5 (b) 3 (c) 7 (d) none of these

Answer 1

Answer:

value is 3

explanation:

3x+2y=13...(1)

3x-2y=5....(2)

add equation 1 and 2

3x+2y=13

+3x-2y=5

after adding this equation we will get by eliminating 2y

6x=18

x=18÷6

x=3

hence value is 3