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-(2/7) = 3.1/4 // - 3.1/4
y-(2/7)-(3.1/4) = 0
y-2/7-0.775 = 0
y-1.06071429 = 0 // + 1.06071429
y = 1.06071429
y = 1.06071429
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