4+x+4x=-21

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


Simplifying
4 + x + 4x = -21

Combine like terms: x + 4x = 5x
4 + 5x = -21

Solving
4 + 5x = -21

Solving for variable 'x'.

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

Add '-4' to each side of the equation.
4 + -4 + 5x = -21 + -4

Combine like terms: 4 + -4 = 0
0 + 5x = -21 + -4
5x = -21 + -4

Combine like terms: -21 + -4 = -25
5x = -25

Divide each side by '5'.
x = -5

Simplifying
x = -5

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