যদি 3x+2 =81 হয় তবে 3x-2 = কত?
Solution
Correct Answer: Option A
3x+2 = 81
⇒ 3x+2 =34
⇒ x+2 = 4
⇒ x = 2
∴ 3x-2
= 32-2
= 30
= 1
⇒ 3x+2 =34
⇒ x+2 = 4
⇒ x = 2
∴ 3x-2
= 32-2
= 30
= 1
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