.3x+4=.1(x+30)

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Solution for .3x+4=.1(x+30) equation: 


Simplifying
0.3x + 4 = 0.1(x + 30)

Reorder the terms:
4 + 0.3x = 0.1(x + 30)

Reorder the terms:
4 + 0.3x = 0.1(30 + x)
4 + 0.3x = (30 * 0.1 + x * 0.1)
4 + 0.3x = (3 + 0.1x)

Solving
4 + 0.3x = 3 + 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 + 0.3x + -0.1x = 3 + 0.1x + -0.1x

Combine like terms: 0.3x + -0.1x = 0.2x
4 + 0.2x = 3 + 0.1x + -0.1x

Combine like terms: 0.1x + -0.1x = 0.0
4 + 0.2x = 3 + 0.0
4 + 0.2x = 3

Add '-4' to each side of the equation.
4 + -4 + 0.2x = 3 + -4

Combine like terms: 4 + -4 = 0
0 + 0.2x = 3 + -4
0.2x = 3 + -4

Combine like terms: 3 + -4 = -1
0.2x = -1

Divide each side by '0.2'.
x = -5

Simplifying
x = -5

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