If {3x + y = 10, {x - 4y = -1 then y = _____?
- 1
- 2
- 3
- None of these
Explanation
Given:
3x + y = 10 ...(i)
x - 4y = -1 ...(ii)
From (ii):
x = -1 + 4y ...(iii)
Put (iii) in (i):
3(-1 + 4y) + y = 10
-3 + 12y + y = 10
13y = 13
y = 1
Last verified on 06-03-2026
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