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1b/13-3b/13=8/13
We simplify the equation to the form, which is simple to understand
1b/13-3b/13=8/13
We move all terms containing b to the left and all other terms to the right.
+ 0.076923076923077b-0.23076923076923b=0.61538461538462
We simplify left and right side of the equation.
-0.15384615384615b=0.61538461538462
We divide both sides of the equation by -0.15384615384615 to get b.
b=-4
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