(5+x)+4 = 3(x+1) হলে x এর মান কত?
A 4
B 5
C 2
D 3
Correct Answer: Option D
(5+x)+4 = 3(x+1)
= 5 + x + 4 = 3x + 3
= 3x - x = 9 - 3
= 2x = 6
= x = 6/2
x = 3
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