SSC SSC CPO Mock Test Series 2025 (Tier I & II) (DP SI & CAPF) Quantitative Aptitude Algebra Linear Equation in 2 Variable

যদি 10x + 7y + 11 = 0 এবং 30x - ky - 9 = 0 সমীকরণের কোনও সমাধান না থাকে, তবে k এর মান কত?

1
-21
2
-20
3
-18
4
21
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