Answer:
y = 3
Explanation:
2x - y = 1 ← substitute x = 2 into the equation
2(2) - y = 1
4 - y = 1 ( subtract 4 from both sides )
- y = - 3 ( multiply both sides by - 1 )
y=3
2x-y=1
if x=2 then
2(2)-y=1
4-y=1
y= 4-1
y=3.
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