[9(c+5)-15]-[3(c-4)+3]=

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Solution for [9(c+5)-15]-[3(c-4)+3]= equation:


Simplifying
[9(c + 5) + -15] + -1[3(c + -4) + 3] = 0

Reorder the terms:
[9(5 + c) + -15] + -1[3(c + -4) + 3] = 0
[(5 * 9 + c * 9) + -15] + -1[3(c + -4) + 3] = 0
[(45 + 9c) + -15] + -1[3(c + -4) + 3] = 0

Reorder the terms:
[45 + -15 + 9c] + -1[3(c + -4) + 3] = 0

Combine like terms: 45 + -15 = 30
[30 + 9c] + -1[3(c + -4) + 3] = 0

Remove brackets around [30 + 9c]
30 + 9c + -1[3(c + -4) + 3] = 0

Reorder the terms:
30 + 9c + -1[3(-4 + c) + 3] = 0
30 + 9c + -1[(-4 * 3 + c * 3) + 3] = 0
30 + 9c + -1[(-12 + 3c) + 3] = 0

Reorder the terms:
30 + 9c + -1[-12 + 3 + 3c] = 0

Combine like terms: -12 + 3 = -9
30 + 9c + -1[-9 + 3c] = 0
30 + 9c + [-9 * -1 + 3c * -1] = 0
30 + 9c + [9 + -3c] = 0

Reorder the terms:
30 + 9 + 9c + -3c = 0

Combine like terms: 30 + 9 = 39
39 + 9c + -3c = 0

Combine like terms: 9c + -3c = 6c
39 + 6c = 0

Solving
39 + 6c = 0

Solving for variable 'c'.

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

Add '-39' to each side of the equation.
39 + -39 + 6c = 0 + -39

Combine like terms: 39 + -39 = 0
0 + 6c = 0 + -39
6c = 0 + -39

Combine like terms: 0 + -39 = -39
6c = -39

Divide each side by '6'.
c = -6.5

Simplifying
c = -6.5

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