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2a/7-8=12
We simplify the equation to the form, which is simple to understand
2a/7-8=12
We move all terms containing a to the left and all other terms to the right.
+ 0.28571428571429a=+12+8
We simplify left and right side of the equation.
+ 0.28571428571429a=+20
We divide both sides of the equation by 0.28571428571429 to get a.
a=70
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