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35+(6+r)=85
We simplify the equation to the form, which is simple to understand
35+(6+r)=85
Remove unnecessary parentheses
+35+6+r=+85
We move all terms containing r to the left and all other terms to the right.
+1r=+85-35-6
We simplify left and right side of the equation.
+1r=+44
We divide both sides of the equation by 1 to get r.
r=44
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