5-7x=3x+21

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Solution for 5-7x=3x+21 equation:


Simplifying
5 + -7x = 3x + 21

Reorder the terms:
5 + -7x = 21 + 3x

Solving
5 + -7x = 21 + 3x

Solving for variable 'x'.

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

Add '-3x' to each side of the equation.
5 + -7x + -3x = 21 + 3x + -3x

Combine like terms: -7x + -3x = -10x
5 + -10x = 21 + 3x + -3x

Combine like terms: 3x + -3x = 0
5 + -10x = 21 + 0
5 + -10x = 21

Add '-5' to each side of the equation.
5 + -5 + -10x = 21 + -5

Combine like terms: 5 + -5 = 0
0 + -10x = 21 + -5
-10x = 21 + -5

Combine like terms: 21 + -5 = 16
-10x = 16

Divide each side by '-10'.
x = -1.6

Simplifying
x = -1.6

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