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(k+10)/2+(k+10)+k=140
We simplify the equation to the form, which is simple to understand
(k+10)/2+(k+10)+k=140
Reorder the terms in parentheses
( + 0.5k+5)+(k+10)+k=140
Remove unnecessary parentheses
+ 0.5k+5+(k+10)+k=140
Remove unnecessary parentheses
+ 0.5k+5+k+10+k=+140
We move all terms containing k to the left and all other terms to the right.
+ 0.5k+1k+1k=+140-5-10
We simplify left and right side of the equation.
+2.5k=+125
We divide both sides of the equation by 2.5 to get k.
k=50
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