3(-7-3b)=

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Solution for 3(-7-3b)= equation: 


Simplifying
3(-7 + -3b) = 0
(-7 * 3 + -3b * 3) = 0
(-21 + -9b) = 0

Solving
-21 + -9b = 0

Solving for variable 'b'.

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

Add '21' to each side of the equation.
-21 + 21 + -9b = 0 + 21

Combine like terms: -21 + 21 = 0
0 + -9b = 0 + 21
-9b = 0 + 21

Combine like terms: 0 + 21 = 21
-9b = 21

Divide each side by '-9'.
b = -2.333333333

Simplifying
b = -2.333333333

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