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23x+20-21=19x+18-x
We simplify the equation to the form, which is simple to understand
23x+20-21=19x+18-x
We move all terms containing x to the left and all other terms to the right.
+23x-19x+1x=+18-20+21
We simplify left and right side of the equation.
+5x=+19
We divide both sides of the equation by 5 to get x.
x=3.8
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