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2-x-3x=100
We simplify the equation to the form, which is simple to understand
2-x-3x=100
We move all terms containing x to the left and all other terms to the right.
-1x-3x=+100-2
We simplify left and right side of the equation.
-4x=+98
We divide both sides of the equation by -4 to get x.
x=-24.5
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