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2-8y=21
We simplify the equation to the form, which is simple to understand
2-8y=21
We move all terms containing y to the left and all other terms to the right.
-8y=+21-2
We simplify left and right side of the equation.
-8y=+19
We divide both sides of the equation by -8 to get y.
y=-2.375
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