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Is this the correct working out for y^2/5 - 2 = 18 (1 Viewer)

Jigmey

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y^2-10 = 90
y^2=100
y = +-square root of 100
y = +-10
 

JupiterPie

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Seems as two steps are missing. My solution is:
y^2/5 - 2 = 18
y^2/5 = 20
y^2 = 5*20
y^2 = 100
y = +- square root(100)
y = +-10
 

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