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2y-30+y=78
We simplify the equation to the form, which is simple to understand
2y-30+y=78
We move all terms containing y to the left and all other terms to the right.
+2y+1y=+78+30
We simplify left and right side of the equation.
+3y=+108
We divide both sides of the equation by 3 to get y.
y=36
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