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7.5+2.2n=-5.7
We simplify the equation to the form, which is simple to understand
7.5+2.2n=-5.7
We move all terms containing n to the left and all other terms to the right.
+2.2n=-5.7-7.5
We simplify left and right side of the equation.
+2.2n=-13.2
We divide both sides of the equation by 2.2 to get n.
n=-6
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