If it's not what You are looking for type in the equation solver your own equation and let us solve it.
y in (-oo:+oo)
(1/5)*y = 8 // - 8
(1/5)*y-8 = 0
1/5*y-8 = 0 // + 8
1/5*y = 8 // : 1/5
y = 8/1/5
y = 40
y = 40
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