\(y\times1+y\times2+y\times27-\left(99-22\right)=277\)
\(y\times\left(1+2+27\right)-77=277\)
\(y\times30-77=277\)
\(y\times30=277+77\)
\(y\times30=354\)
\(y=\dfrac{354}{30}\)
\(y=\dfrac{59}{5}\)
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