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b-2/5=3
We simplify the equation to the form, which is simple to understand
b-2/5=3
We move all terms containing b to the left and all other terms to the right.
+1b=+3 + 0.4
We simplify left and right side of the equation.
+1b=+3.4
We divide both sides of the equation by 1 to get b.
b=3.4
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