3(2b+8)-5(2b+4)=43

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Solution for 3(2b+8)-5(2b+4)=43 equation:


Simplifying
3(2b + 8) + -5(2b + 4) = 43

Reorder the terms:
3(8 + 2b) + -5(2b + 4) = 43
(8 * 3 + 2b * 3) + -5(2b + 4) = 43
(24 + 6b) + -5(2b + 4) = 43

Reorder the terms:
24 + 6b + -5(4 + 2b) = 43
24 + 6b + (4 * -5 + 2b * -5) = 43
24 + 6b + (-20 + -10b) = 43

Reorder the terms:
24 + -20 + 6b + -10b = 43

Combine like terms: 24 + -20 = 4
4 + 6b + -10b = 43

Combine like terms: 6b + -10b = -4b
4 + -4b = 43

Solving
4 + -4b = 43

Solving for variable 'b'.

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

Add '-4' to each side of the equation.
4 + -4 + -4b = 43 + -4

Combine like terms: 4 + -4 = 0
0 + -4b = 43 + -4
-4b = 43 + -4

Combine like terms: 43 + -4 = 39
-4b = 39

Divide each side by '-4'.
b = -9.75

Simplifying
b = -9.75

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