Question

if x+y=34 and x+4y=16 find the value of x-y

Answer 1

Answer:

x-y = 46

Step-by-step explanation:

x+y = 34------(1)

X+4y= 16-------(2)

On solving equations (1) and (2) ,

we get y = -6,

substitute y in (1)

Therefore, x = 40

x-y

=> 40-(-6)

=>40+6

  Therefore, answer is 46

Answer 2

1st equation:

x+y = 34

=>x=34-y

2nd equation:

x+4y = 16

=>34-y+4y=16

=>34+3y =16

=>3y =16-34

=>y= -18/3

.•.y = -6

x = 34-y = 34-(-6) = 34+6 = 40

So, x-y = 40-(-6) = 40+6 = 46

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