Question

If 3x + 4y = 10 and x – y = 1, then find the value of (x + 2y)

Answer 1

Step-by-step explanation:

Equations are 3x+4y=10 and x-2y=1

multiply the second equation by 2

3x+4y=10

2x-4y=2

Now add,

x=12

Now put value of x in initial equation,

x-y=1

12-y=1

y=11

x+2y= 12+22

=34

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Answer 2

So y=x+1
x+2(x+1)
x+2x+2
3x+2
So 3x +2 is your answer
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