2x+21=x+(91-x)

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Solution for 2x+21=x+(91-x) equation:


Simplifying
2x + 21 = x + (91 + -1x)

Reorder the terms:
21 + 2x = x + (91 + -1x)

Remove parenthesis around (91 + -1x)
21 + 2x = x + 91 + -1x

Reorder the terms:
21 + 2x = 91 + x + -1x

Combine like terms: x + -1x = 0
21 + 2x = 91 + 0
21 + 2x = 91

Solving
21 + 2x = 91

Solving for variable 'x'.

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

Add '-21' to each side of the equation.
21 + -21 + 2x = 91 + -21

Combine like terms: 21 + -21 = 0
0 + 2x = 91 + -21
2x = 91 + -21

Combine like terms: 91 + -21 = 70
2x = 70

Divide each side by '2'.
x = 35

Simplifying
x = 35

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