2c+3[7-c]=-1

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Solution for 2c+3[7-c]=-1 equation:


Simplifying
2c + 3[7 + -1c] = -1
2c + [7 * 3 + -1c * 3] = -1
2c + [21 + -3c] = -1

Reorder the terms:
21 + 2c + -3c = -1

Combine like terms: 2c + -3c = -1c
21 + -1c = -1

Solving
21 + -1c = -1

Solving for variable 'c'.

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

Add '-21' to each side of the equation.
21 + -21 + -1c = -1 + -21

Combine like terms: 21 + -21 = 0
0 + -1c = -1 + -21
-1c = -1 + -21

Combine like terms: -1 + -21 = -22
-1c = -22

Divide each side by '-1'.
c = 22

Simplifying
c = 22

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