5x-(4)=21

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Solution for 5x-(4)=21 equation: 


Simplifying
5x + -1(4) = 21

Multiply -1 * 4
5x + -4 = 21

Reorder the terms:
-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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