-3x-3.4-x=9+3x-21

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Solution for -3x-3.4-x=9+3x-21 equation:


Simplifying
-3x + -3.4 + -1x = 9 + 3x + -21

Reorder the terms:
-3.4 + -3x + -1x = 9 + 3x + -21

Combine like terms: -3x + -1x = -4x
-3.4 + -4x = 9 + 3x + -21

Reorder the terms:
-3.4 + -4x = 9 + -21 + 3x

Combine like terms: 9 + -21 = -12
-3.4 + -4x = -12 + 3x

Solving
-3.4 + -4x = -12 + 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.
-3.4 + -4x + -3x = -12 + 3x + -3x

Combine like terms: -4x + -3x = -7x
-3.4 + -7x = -12 + 3x + -3x

Combine like terms: 3x + -3x = 0
-3.4 + -7x = -12 + 0
-3.4 + -7x = -12

Add '3.4' to each side of the equation.
-3.4 + 3.4 + -7x = -12 + 3.4

Combine like terms: -3.4 + 3.4 = 0.0
0.0 + -7x = -12 + 3.4
-7x = -12 + 3.4

Combine like terms: -12 + 3.4 = -8.6
-7x = -8.6

Divide each side by '-7'.
x = 1.228571429

Simplifying
x = 1.228571429

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