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:

option a 5

Step-by-step explanation:

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Answer 2

Answer:

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

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

6x=18

x=3

put x=3 in (2)

3(3)-2y=5

9-2y=5

-2y=5-9

-2y=-4

y=2

x+y=3+2=5

therefore, (a) option is correct.

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