3b-9=19-4b

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Solution for 3b-9=19-4b equation:


Simplifying
3b + -9 = 19 + -4b

Reorder the terms:
-9 + 3b = 19 + -4b

Solving
-9 + 3b = 19 + -4b

Solving for variable 'b'.

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

Add '4b' to each side of the equation.
-9 + 3b + 4b = 19 + -4b + 4b

Combine like terms: 3b + 4b = 7b
-9 + 7b = 19 + -4b + 4b

Combine like terms: -4b + 4b = 0
-9 + 7b = 19 + 0
-9 + 7b = 19

Add '9' to each side of the equation.
-9 + 9 + 7b = 19 + 9

Combine like terms: -9 + 9 = 0
0 + 7b = 19 + 9
7b = 19 + 9

Combine like terms: 19 + 9 = 28
7b = 28

Divide each side by '7'.
b = 4

Simplifying
b = 4

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