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x+5x+1+x+5x+1=278
We simplify the equation to the form, which is simple to understand
x+5x+1+x+5x+1=278
We move all terms containing x to the left and all other terms to the right.
+1x+5x+1x+5x=+278-1-1
We simplify left and right side of the equation.
+12x=+276
We divide both sides of the equation by 12 to get x.
x=23
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