153-7X=20X+21

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Solution for 153-7X=20X+21 equation:


Simplifying
153 + -7X = 20X + 21

Reorder the terms:
153 + -7X = 21 + 20X

Solving
153 + -7X = 21 + 20X

Solving for variable 'X'.

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

Add '-20X' to each side of the equation.
153 + -7X + -20X = 21 + 20X + -20X

Combine like terms: -7X + -20X = -27X
153 + -27X = 21 + 20X + -20X

Combine like terms: 20X + -20X = 0
153 + -27X = 21 + 0
153 + -27X = 21

Add '-153' to each side of the equation.
153 + -153 + -27X = 21 + -153

Combine like terms: 153 + -153 = 0
0 + -27X = 21 + -153
-27X = 21 + -153

Combine like terms: 21 + -153 = -132
-27X = -132

Divide each side by '-27'.
X = 4.888888889

Simplifying
X = 4.888888889

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