4=9b+13

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Solution for 4=9b+13 equation:


Simplifying
4 = 9b + 13

Reorder the terms:
4 = 13 + 9b

Solving
4 = 13 + 9b

Solving for variable 'b'.

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

Add '-9b' to each side of the equation.
4 + -9b = 13 + 9b + -9b

Combine like terms: 9b + -9b = 0
4 + -9b = 13 + 0
4 + -9b = 13

Add '-4' to each side of the equation.
4 + -4 + -9b = 13 + -4

Combine like terms: 4 + -4 = 0
0 + -9b = 13 + -4
-9b = 13 + -4

Combine like terms: 13 + -4 = 9
-9b = 9

Divide each side by '-9'.
b = -1

Simplifying
b = -1

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