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 = 8/7-8-1.1429 // - 8/7-8-1.1429
y-(8/7)+1.1429+8 = 0
y-8/7+1.1429+8 = 0
y+8.00004286 = 0 // - 8.00004286
y = -8.00004286
y = -8.00004286
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