243=4b-9*b

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Solution for 243=4b-9*b equation:


Simplifying
243 = 4b + -9b

Combine like terms: 4b + -9b = -5b
243 = -5b

Solving
243 = -5b

Solving for variable 'b'.

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

Add '5b' to each side of the equation.
243 + 5b = -5b + 5b

Combine like terms: -5b + 5b = 0
243 + 5b = 0

Add '-243' to each side of the equation.
243 + -243 + 5b = 0 + -243

Combine like terms: 243 + -243 = 0
0 + 5b = 0 + -243
5b = 0 + -243

Combine like terms: 0 + -243 = -243
5b = -243

Divide each side by '5'.
b = -48.6

Simplifying
b = -48.6

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