4x+21=11-4x

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Solution for 4x+21=11-4x equation:


Simplifying
4x + 21 = 11 + -4x

Reorder the terms:
21 + 4x = 11 + -4x

Solving
21 + 4x = 11 + -4x

Solving for variable 'x'.

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

Add '4x' to each side of the equation.
21 + 4x + 4x = 11 + -4x + 4x

Combine like terms: 4x + 4x = 8x
21 + 8x = 11 + -4x + 4x

Combine like terms: -4x + 4x = 0
21 + 8x = 11 + 0
21 + 8x = 11

Add '-21' to each side of the equation.
21 + -21 + 8x = 11 + -21

Combine like terms: 21 + -21 = 0
0 + 8x = 11 + -21
8x = 11 + -21

Combine like terms: 11 + -21 = -10
8x = -10

Divide each side by '8'.
x = -1.25

Simplifying
x = -1.25

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