বাস্তব সংখ্যায় ।3x + 2। < 7 অসমতাটির সমাধান:
A - 3 < x < 3
B (- 5/3) < x < (5/3)
C (- 3) < x < (5/3)
D (5/3) < x < (- 5/3)
Solution
Correct Answer: Option C
। 3x + 2 । < 7
= - 7 < 3x + 2 < 7
= - 7 - 2 < 3x + 2 - 2 < 7 - 2
= - 9 < 3x < 5
= (- 9/3) < (3x/3) < (5/3)
= - 3 < x < (5/3)