13(b-2)-4(2b+5)=9

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Solution for 13(b-2)-4(2b+5)=9 equation:


Simplifying
13(b + -2) + -4(2b + 5) = 9

Reorder the terms:
13(-2 + b) + -4(2b + 5) = 9
(-2 * 13 + b * 13) + -4(2b + 5) = 9
(-26 + 13b) + -4(2b + 5) = 9

Reorder the terms:
-26 + 13b + -4(5 + 2b) = 9
-26 + 13b + (5 * -4 + 2b * -4) = 9
-26 + 13b + (-20 + -8b) = 9

Reorder the terms:
-26 + -20 + 13b + -8b = 9

Combine like terms: -26 + -20 = -46
-46 + 13b + -8b = 9

Combine like terms: 13b + -8b = 5b
-46 + 5b = 9

Solving
-46 + 5b = 9

Solving for variable 'b'.

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

Add '46' to each side of the equation.
-46 + 46 + 5b = 9 + 46

Combine like terms: -46 + 46 = 0
0 + 5b = 9 + 46
5b = 9 + 46

Combine like terms: 9 + 46 = 55
5b = 55

Divide each side by '5'.
b = 11

Simplifying
b = 11

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