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8.5n-7.5n+7.8=3.5
We simplify the equation to the form, which is simple to understand
8.5n-7.5n+7.8=3.5
We move all terms containing n to the left and all other terms to the right.
+8.5n-7.5n=+3.5-7.8
We simplify left and right side of the equation.
+1n=-4.3
We divide both sides of the equation by 1 to get n.
n=-4.3
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