2.8x+5-3.8x=9

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Solution for 2.8x+5-3.8x=9 equation: 


Simplifying
2.8x + 5 + -3.8x = 9

Reorder the terms:
5 + 2.8x + -3.8x = 9

Combine like terms: 2.8x + -3.8x = -1x
5 + -1x = 9

Solving
5 + -1x = 9

Solving for variable 'x'.

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

Add '-5' to each side of the equation.
5 + -5 + -1x = 9 + -5

Combine like terms: 5 + -5 = 0
0 + -1x = 9 + -5
-1x = 9 + -5

Combine like terms: 9 + -5 = 4
-1x = 4

Divide each side by '-1'.
x = -4

Simplifying
x = -4

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