6x+21=-x+63

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Solution for 6x+21=-x+63 equation:


Simplifying
6x + 21 = -1x + 63

Reorder the terms:
21 + 6x = -1x + 63

Reorder the terms:
21 + 6x = 63 + -1x

Solving
21 + 6x = 63 + -1x

Solving for variable 'x'.

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

Add 'x' to each side of the equation.
21 + 6x + x = 63 + -1x + x

Combine like terms: 6x + x = 7x
21 + 7x = 63 + -1x + x

Combine like terms: -1x + x = 0
21 + 7x = 63 + 0
21 + 7x = 63

Add '-21' to each side of the equation.
21 + -21 + 7x = 63 + -21

Combine like terms: 21 + -21 = 0
0 + 7x = 63 + -21
7x = 63 + -21

Combine like terms: 63 + -21 = 42
7x = 42

Divide each side by '7'.
x = 6

Simplifying
x = 6

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