5x-2-4x-5=21

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Solution for 5x-2-4x-5=21 equation:


Simplifying
5x + -2 + -4x + -5 = 21

Reorder the terms:
-2 + -5 + 5x + -4x = 21

Combine like terms: -2 + -5 = -7
-7 + 5x + -4x = 21

Combine like terms: 5x + -4x = 1x
-7 + 1x = 21

Solving
-7 + 1x = 21

Solving for variable 'x'.

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

Add '7' to each side of the equation.
-7 + 7 + 1x = 21 + 7

Combine like terms: -7 + 7 = 0
0 + 1x = 21 + 7
1x = 21 + 7

Combine like terms: 21 + 7 = 28
1x = 28

Divide each side by '1'.
x = 28

Simplifying
x = 28

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