21x-63=2[14x-31]+6

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Solution for 21x-63=2[14x-31]+6 equation:


Simplifying
21x + -63 = 2[14x + -31] + 6

Reorder the terms:
-63 + 21x = 2[14x + -31] + 6

Reorder the terms:
-63 + 21x = 2[-31 + 14x] + 6
-63 + 21x = [-31 * 2 + 14x * 2] + 6
-63 + 21x = [-62 + 28x] + 6

Reorder the terms:
-63 + 21x = -62 + 6 + 28x

Combine like terms: -62 + 6 = -56
-63 + 21x = -56 + 28x

Solving
-63 + 21x = -56 + 28x

Solving for variable 'x'.

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

Add '-28x' to each side of the equation.
-63 + 21x + -28x = -56 + 28x + -28x

Combine like terms: 21x + -28x = -7x
-63 + -7x = -56 + 28x + -28x

Combine like terms: 28x + -28x = 0
-63 + -7x = -56 + 0
-63 + -7x = -56

Add '63' to each side of the equation.
-63 + 63 + -7x = -56 + 63

Combine like terms: -63 + 63 = 0
0 + -7x = -56 + 63
-7x = -56 + 63

Combine like terms: -56 + 63 = 7
-7x = 7

Divide each side by '-7'.
x = -1

Simplifying
x = -1

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