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54x+2x=21
We simplify the equation to the form, which is simple to understand
54x+2x=21
We move all terms containing x to the left and all other terms to the right.
+54x+2x=+21
We simplify left and right side of the equation.
+56x=+21
We divide both sides of the equation by 56 to get x.
x=0.375
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