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3x+2x-x.(x+25)=380
We simplify the equation to the form, which is simple to understand
3x+2x-x.(x+25)=380
We move all terms containing x to the left and all other terms to the right.
+3x+2x-1x+1x=+380-25-0
We simplify left and right side of the equation.
+5x=+355
We divide both sides of the equation by 5 to get x.
x=71
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