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2x+5(x-2)-21=4-(2x-10)-2
We simplify the equation to the form, which is simple to understand
2x+5(x-2)-21=4-(2x-10)-2
Reorder the terms in parentheses
2x+(+5x-10)-21=4-(2x-10)-2
Remove unnecessary parentheses
+2x+5x-10-21=+4-(+2x-10+)-2
Remove unnecessary parentheses
2x+5x-10-21=4-2x+10-2
We move all terms containing x to the left and all other terms to the right.
+2x+5x+2x=+4+10-2+10+21
We simplify left and right side of the equation.
+9x=+43
We divide both sides of the equation by 9 to get x.
x=4.77777777778
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