15=13+b*3

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Solution for 15=13+b*3 equation:


Simplifying
15 = 13 + b * 3

Reorder the terms for easier multiplication:
15 = 13 + 3b

Solving
15 = 13 + 3b

Solving for variable 'b'.

Move all terms containing b to the left, all other terms to the right.

Add '-3b' to each side of the equation.
15 + -3b = 13 + 3b + -3b

Combine like terms: 3b + -3b = 0
15 + -3b = 13 + 0
15 + -3b = 13

Add '-15' to each side of the equation.
15 + -15 + -3b = 13 + -15

Combine like terms: 15 + -15 = 0
0 + -3b = 13 + -15
-3b = 13 + -15

Combine like terms: 13 + -15 = -2
-3b = -2

Divide each side by '-3'.
b = 0.6666666667

Simplifying
b = 0.6666666667

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