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2a-5=-a+7,5+5+2,5
We simplify the equation to the form, which is simple to understand
2a-5=-a+7,5+5+2,5
We move all terms containing a to the left and all other terms to the right.
+2a+1a=+7.5+5+2.5+5
We simplify left and right side of the equation.
+3a=+20
We divide both sides of the equation by 3 to get a.
a=6.6666666666667
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