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21x+13=6x+1
We simplify the equation to the form, which is simple to understand
21x+13=6x+1
We move all terms containing x to the left and all other terms to the right.
+21x-6x=+1-13
We simplify left and right side of the equation.
+15x=-12
We divide both sides of the equation by 15 to get x.
x=-0.8
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