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8x-21=3(x+8)
We simplify the equation to the form, which is simple to understand
8x-21=3(x+8)
Reorder the terms in parentheses
8x-21=+(+3x+24)
Remove unnecessary parentheses
+8x-21=+3x+24
We move all terms containing x to the left and all other terms to the right.
+8x-3x=+24+21
We simplify left and right side of the equation.
+5x=+45
We divide both sides of the equation by 5 to get x.
x=9
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