9bc+10c-21c+13c=

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Solution for 9bc+10c-21c+13c= equation:


Simplifying
9bc + 10c + -21c + 13c = 0

Combine like terms: 10c + -21c = -11c
9bc + -11c + 13c = 0

Combine like terms: -11c + 13c = 2c
9bc + 2c = 0

Solving
9bc + 2c = 0

Solving for variable 'b'.

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

Add '-2c' to each side of the equation.
9bc + 2c + -2c = 0 + -2c

Combine like terms: 2c + -2c = 0
9bc + 0 = 0 + -2c
9bc = 0 + -2c
Remove the zero:
9bc = -2c

Divide each side by '9c'.
b = -0.2222222222

Simplifying
b = -0.2222222222

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