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7-2y=8
We simplify the equation to the form, which is simple to understand
7-2y=8
We move all terms containing y to the left and all other terms to the right.
-2y=+8-7
We simplify left and right side of the equation.
-2y=+1
We divide both sides of the equation by -2 to get y.
y=-0.5
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