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4+b*2=15*2
We simplify the equation to the form, which is simple to understand
4+b*2=15*2
Simplifying:
4+2b=15*2
Simplifying:
4+2b=+30
We move all terms containing b to the left and all other terms to the right.
+2b=+30-4
We simplify left and right side of the equation.
+2b=+26
We divide both sides of the equation by 2 to get b.
b=13
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