(10x+9)+(21x-12)=

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Solution for (10x+9)+(21x-12)= equation:


(10x+9)+(21x-12)=0

We simplify the equation to the form, which is simple to understand 
(10x+9)+(21x-12)=0

Remove unnecessary parentheses
10x+9+(21x-12)=0

Remove unnecessary parentheses
+10x+9+21x-12=0

We move all terms containing x to the left and all other terms to the right. 
+10x+21x=0-9+12

We simplify left and right side of the equation. 
+31x=+3

We divide both sides of the equation by 31 to get x. 
x=0.096774193548387

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