.7x-2=.8

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Solution for .7x-2=.8 equation: 


Simplifying
0.7x + -2 = 0.8

Reorder the terms:
-2 + 0.7x = 0.8

Solving
-2 + 0.7x = 0.8

Solving for variable 'x'.

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

Add '2' to each side of the equation.
-2 + 2 + 0.7x = 0.8 + 2

Combine like terms: -2 + 2 = 0
0 + 0.7x = 0.8 + 2
0.7x = 0.8 + 2

Combine like terms: 0.8 + 2 = 2.8
0.7x = 2.8

Divide each side by '0.7'.
x = 4

Simplifying
x = 4

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