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6+.8b=.9b
We simplify the equation to the form, which is simple to understand
6+.8b=.9b
We move all terms containing b to the left and all other terms to the right.
+ 0.8b-0.9b=-6
We simplify left and right side of the equation.
-0.1b=-6
We divide both sides of the equation by -0.1 to get b.
b=60
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