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)
y/2-6 = 1 // - 1
y/2-6-1 = 0
1/2*y-7 = 0 // + 7
1/2*y = 7 // : 1/2
y = 7/1/2
y = 14
y = 14
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