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 = 4/9 // - 4/9
y/2-(4/9) = 0
y/2-4/9 = 0
1/2*y-4/9 = 0 // + 4/9
1/2*y = 4/9 // : 1/2
y = 4/9/1/2
y = 8/9
y = 8/9
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