0.3+4.2=0.1x+4

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Solution for 0.3+4.2=0.1x+4 equation: 


Simplifying
0.3 + 4.2 = 0.1x + 4

Combine like terms: 0.3 + 4.2 = 4.5
4.5 = 0.1x + 4

Reorder the terms:
4.5 = 4 + 0.1x

Solving
4.5 = 4 + 0.1x

Solving for variable 'x'.

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

Add '-0.1x' to each side of the equation.
4.5 + -0.1x = 4 + 0.1x + -0.1x

Combine like terms: 0.1x + -0.1x = 0.0
4.5 + -0.1x = 4 + 0.0
4.5 + -0.1x = 4

Add '-4.5' to each side of the equation.
4.5 + -4.5 + -0.1x = 4 + -4.5

Combine like terms: 4.5 + -4.5 = 0.0
0.0 + -0.1x = 4 + -4.5
-0.1x = 4 + -4.5

Combine like terms: 4 + -4.5 = -0.5
-0.1x = -0.5

Divide each side by '-0.1'.
x = 5

Simplifying
x = 5

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