Subject
Quantitative Aptitude
Topic
Equation
If 5xy + 28x - 16 = 0 and y = -4, what is the value of 2x + y?
If 5xy + 28x - 16 = 0 and y = -4, what is the value of 2x + y?
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4Explanation
দেওয়া আছে, 5xy + 28x - 16 = 0 y = -4 y = -4 কে সমীকরণে বসিয়ে, 5x(-4) + 28x - 16 = 0 বা, -20x + 28x - 16 = 0 বা, 8x - 16 = 0 বা, 8x = 16 বা, x = 2 এখন x = 2 এবং y = -4 বসিয়ে, 2x + y = 2(2) + (-4) = 4 - 4 = 0Related questions
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