[9(b+5)-15]-[3(b-3)+3]=

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Solution for [9(b+5)-15]-[3(b-3)+3]= equation:


Simplifying
[9(b + 5) + -15] + -1[3(b + -3) + 3] = 0

Reorder the terms:
[9(5 + b) + -15] + -1[3(b + -3) + 3] = 0
[(5 * 9 + b * 9) + -15] + -1[3(b + -3) + 3] = 0
[(45 + 9b) + -15] + -1[3(b + -3) + 3] = 0

Reorder the terms:
[45 + -15 + 9b] + -1[3(b + -3) + 3] = 0

Combine like terms: 45 + -15 = 30
[30 + 9b] + -1[3(b + -3) + 3] = 0

Remove brackets around [30 + 9b]
30 + 9b + -1[3(b + -3) + 3] = 0

Reorder the terms:
30 + 9b + -1[3(-3 + b) + 3] = 0
30 + 9b + -1[(-3 * 3 + b * 3) + 3] = 0
30 + 9b + -1[(-9 + 3b) + 3] = 0

Reorder the terms:
30 + 9b + -1[-9 + 3 + 3b] = 0

Combine like terms: -9 + 3 = -6
30 + 9b + -1[-6 + 3b] = 0
30 + 9b + [-6 * -1 + 3b * -1] = 0
30 + 9b + [6 + -3b] = 0

Reorder the terms:
30 + 6 + 9b + -3b = 0

Combine like terms: 30 + 6 = 36
36 + 9b + -3b = 0

Combine like terms: 9b + -3b = 6b
36 + 6b = 0

Solving
36 + 6b = 0

Solving for variable 'b'.

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

Add '-36' to each side of the equation.
36 + -36 + 6b = 0 + -36

Combine like terms: 36 + -36 = 0
0 + 6b = 0 + -36
6b = 0 + -36

Combine like terms: 0 + -36 = -36
6b = -36

Divide each side by '6'.
b = -6

Simplifying
b = -6

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