3-0.3(x+3)=4.2-0.6x

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Solution for 3-0.3(x+3)=4.2-0.6x equation: 


Simplifying
3 + -0.3(x + 3) = 4.2 + -0.6x

Reorder the terms:
3 + -0.3(3 + x) = 4.2 + -0.6x
3 + (3 * -0.3 + x * -0.3) = 4.2 + -0.6x
3 + (-0.9 + -0.3x) = 4.2 + -0.6x

Combine like terms: 3 + -0.9 = 2.1
2.1 + -0.3x = 4.2 + -0.6x

Solving
2.1 + -0.3x = 4.2 + -0.6x

Solving for variable 'x'.

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

Add '0.6x' to each side of the equation.
2.1 + -0.3x + 0.6x = 4.2 + -0.6x + 0.6x

Combine like terms: -0.3x + 0.6x = 0.3x
2.1 + 0.3x = 4.2 + -0.6x + 0.6x

Combine like terms: -0.6x + 0.6x = 0.0
2.1 + 0.3x = 4.2 + 0.0
2.1 + 0.3x = 4.2

Add '-2.1' to each side of the equation.
2.1 + -2.1 + 0.3x = 4.2 + -2.1

Combine like terms: 2.1 + -2.1 = 0.0
0.0 + 0.3x = 4.2 + -2.1
0.3x = 4.2 + -2.1

Combine like terms: 4.2 + -2.1 = 2.1
0.3x = 2.1

Divide each side by '0.3'.
x = 7

Simplifying
x = 7

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