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3y+7.2=13.8
We simplify the equation to the form, which is simple to understand
3y+7.2=13.8
We move all terms containing y to the left and all other terms to the right.
+3y=+13.8-7.2
We simplify left and right side of the equation.
+3y=+6.6
We divide both sides of the equation by 3 to get y.
y=2.2
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