.3X-.7=.8

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Solution for .3X-.7=.8 equation: 


Simplifying
0.3X + -0.7 = 0.8

Reorder the terms:
-0.7 + 0.3X = 0.8

Solving
-0.7 + 0.3X = 0.8

Solving for variable 'X'.

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

Add '0.7' to each side of the equation.
-0.7 + 0.7 + 0.3X = 0.8 + 0.7

Combine like terms: -0.7 + 0.7 = 0.0
0.0 + 0.3X = 0.8 + 0.7
0.3X = 0.8 + 0.7

Combine like terms: 0.8 + 0.7 = 1.5
0.3X = 1.5

Divide each side by '0.3'.
X = 5

Simplifying
X = 5

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