-(4x+3)=21

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Solution for -(4x+3)=21 equation: 


Simplifying
-1(4x + 3) = 21

Reorder the terms:
-1(3 + 4x) = 21
(3 * -1 + 4x * -1) = 21
(-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 = 24
-4x = 24

Divide each side by '-4'.
x = -6

Simplifying
x = -6

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