-4x+3=21

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Solution for -4x+3=21 equation: 


Simplifying
-4x + 3 = 21

Reorder the terms:
3 + -4x = 21

Solving
3 + -4x = 21

Solving for variable 'x'.

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

Add '-3' to each side of the equation.
3 + -3 + -4x = 21 + -3

Combine like terms: 3 + -3 = 0
0 + -4x = 21 + -3
-4x = 21 + -3

Combine like terms: 21 + -3 = 18
-4x = 18

Divide each side by '-4'.
x = -4.5

Simplifying
x = -4.5

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