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5x+3+4x=30
We simplify the equation to the form, which is simple to understand
5x+3+4x=30
We move all terms containing x to the left and all other terms to the right.
+5x+4x=+30-3
We simplify left and right side of the equation.
+9x=+27
We divide both sides of the equation by 9 to get x.
x=3
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