.8x+5.4=4.2

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Solution for .8x+5.4=4.2 equation: 


Simplifying
0.8x + 5.4 = 4.2

Reorder the terms:
5.4 + 0.8x = 4.2

Solving
5.4 + 0.8x = 4.2

Solving for variable 'x'.

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

Add '-5.4' to each side of the equation.
5.4 + -5.4 + 0.8x = 4.2 + -5.4

Combine like terms: 5.4 + -5.4 = 0.0
0.0 + 0.8x = 4.2 + -5.4
0.8x = 4.2 + -5.4

Combine like terms: 4.2 + -5.4 = -1.2
0.8x = -1.2

Divide each side by '0.8'.
x = -1.5

Simplifying
x = -1.5

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