Question

3x^2 + 6y = 15

x = 3

Then find the value of y

Answer 1

3×3^2 + 6y = 15
27 + 6y =15
6y= -12
y= -2

Answer 2

Hey friend..!! here's your answer
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${3x}^{2} + 6y = 15 \\ \\ x = 3 \\ \\ 3 {(3)}^{2} + 6y = 15 \\ \\ 3(9) + 6y = 15 \\ \\ 27 + 6y = 15 \\ \\ 6y = 15 - 27 \\ \\ 6y = - 12 \\ \\ y = - 2$

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#Hope its help