=-2(c-d)+(c-d)-6(c-d)

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Solution for =-2(c-d)+(c-d)-6(c-d) equation:


Simplifying
0 = -2(c + -1d) + (c + -1d) + -6(c + -1d)
0 = (c * -2 + -1d * -2) + (c + -1d) + -6(c + -1d)
0 = (-2c + 2d) + (c + -1d) + -6(c + -1d)

Remove parenthesis around (c + -1d)
0 = -2c + 2d + c + -1d + -6(c + -1d)
0 = -2c + 2d + c + -1d + (c * -6 + -1d * -6)
0 = -2c + 2d + c + -1d + (-6c + 6d)

Reorder the terms:
0 = -2c + c + -6c + 2d + -1d + 6d

Combine like terms: -2c + c = -1c
0 = -1c + -6c + 2d + -1d + 6d

Combine like terms: -1c + -6c = -7c
0 = -7c + 2d + -1d + 6d

Combine like terms: 2d + -1d = 1d
0 = -7c + 1d + 6d

Combine like terms: 1d + 6d = 7d
0 = -7c + 7d

Solving
0 = -7c + 7d

Solving for variable 'c'.

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

Add '7c' to each side of the equation.
0 + 7c = -7c + 7c + 7d
Remove the zero:
7c = -7c + 7c + 7d

Combine like terms: -7c + 7c = 0
7c = 0 + 7d
7c = 7d

Divide each side by '7'.
c = d

Simplifying
c = d

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