21-x=5(4-2x)

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Solution for 21-x=5(4-2x) equation:


21-x=5(4-2x)

We simplify the equation to the form, which is simple to understand 
21-x=5(4-2x)

Reorder the terms in parentheses
21-x=+(+20-10x)

Remove unnecessary parentheses
+21-x=+20-10x

We move all terms containing x to the left and all other terms to the right. 
-1x+10x=+20-21

We simplify left and right side of the equation. 
+9x=-1

We divide both sides of the equation by 9 to get x. 
x=-0.111111111111

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