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7a+2a-4=3a-2
We simplify the equation to the form, which is simple to understand
7a+2a-4=3a-2
We move all terms containing a to the left and all other terms to the right.
+7a+2a-3a=-2+4
We simplify left and right side of the equation.
+6a=+2
We divide both sides of the equation by 6 to get a.
a=0.333333333333
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