Question

3x+y=10,x-y=2 simultaneously

Answer 1

Howdy!!

your answer is ----

3x + y = 10 .....(1)
x - y = 2 .......(2)

adding equation (1) and (2) , we get

4x = 12

=> x = 12/4 = 3

put this value in equ (2) ,we get

3 - y = 2

=> y = 3 - 2

=> y = 1

hence , x = 3 and y = 1


hope it help you

Answer 2

Hi friend,

Here is your answer,
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3x + y = 10                   -------------------(i)

x - y = 2                        -------------------(ii)


From (ii) ,

x = 2 + y


Put this value of x in (i)


3(2 + y) + y = 10

=> 6 + 3y + y   = 10

=> 6 + 4y         = 10

=> 4y               = 10 - 6

=> 4y               = 4

=> y                 = 4 
                           4

            y = 1


Put it in (ii) to find the value of x


=> x - 1 = 2

=> x      = 2 + 1

=> x      = 3


Ans: x = 3 and y = 1
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