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3*x-15=12
We simplify the equation to the form, which is simple to understand
3*x-15=12
Simplifying:
+3x-15=12
We move all terms containing x to the left and all other terms to the right.
+3x=+12+15
We simplify left and right side of the equation.
+3x=+27
We divide both sides of the equation by 3 to get x.
x=9
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