=12b^2+9b^2

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Solution for =12b^2+9b^2 equation: 


Simplifying
0 = 12b2 + 9b2

Combine like terms: 12b2 + 9b2 = 21b2
0 = 21b2

Solving
0 = 21b2

Solving for variable 'b'.

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

Add '-21b2' to each side of the equation.
0 + -21b2 = 21b2 + -21b2
Remove the zero:
-21b2 = 21b2 + -21b2

Combine like terms: 21b2 + -21b2 = 0
-21b2 = 0

Divide each side by '-21'.
b2 = 0

Simplifying
b2 = 0

Take the square root of each side:
b = {0}

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