Question

$3y {}^{2} - 20 = 160 - 2y {}^{2}$
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Answer 1

Answer:

$3 {y}^{2} - 20 = 160 - 2 {y}^{2}$

$5 {y}^{2} = 180$

${y}^{2} = \frac{180}{5}$

${y}^{2} = 36$

$y = 6$

Answer 2

Answer:

3y^2-20=160-2y^2

3y^2+2y^2=160+20

5y^2=180

y^2=180/5

y^2=36

taking square root

y=6

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