10-(1+3b)=-20

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Solution for 10-(1+3b)=-20 equation: 


Simplifying
10 + -1(1 + 3b) = -20
10 + (1 * -1 + 3b * -1) = -20
10 + (-1 + -3b) = -20

Combine like terms: 10 + -1 = 9
9 + -3b = -20

Solving
9 + -3b = -20

Solving for variable 'b'.

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

Add '-9' to each side of the equation.
9 + -9 + -3b = -20 + -9

Combine like terms: 9 + -9 = 0
0 + -3b = -20 + -9
-3b = -20 + -9

Combine like terms: -20 + -9 = -29
-3b = -29

Divide each side by '-3'.
b = 9.666666667

Simplifying
b = 9.666666667

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