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123,5=(b*13)/2
We simplify the equation to the form, which is simple to understand
123,5=(b*13)/2
Reorder the terms in parentheses
123,5=(+6.5b)
Remove unnecessary parentheses
123,5=+6.5b
We move all terms containing b to the left and all other terms to the right.
-6.5b=-123.5
We simplify left and right side of the equation.
-6.5b=-123.5
We divide both sides of the equation by -06.5 to get b.
b=19
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