-2.2x+5+1.7x=21

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Solution for -2.2x+5+1.7x=21 equation: 


Simplifying
-2.2x + 5 + 1.7x = 21

Reorder the terms:
5 + -2.2x + 1.7x = 21

Combine like terms: -2.2x + 1.7x = -0.5x
5 + -0.5x = 21

Solving
5 + -0.5x = 21

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 + -0.5x = 21 + -5

Combine like terms: 5 + -5 = 0
0 + -0.5x = 21 + -5
-0.5x = 21 + -5

Combine like terms: 21 + -5 = 16
-0.5x = 16

Divide each side by '-0.5'.
x = -32

Simplifying
x = -32

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