.1(X+30)+.3x=7

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Solution for .1(X+30)+.3x=7 equation:


Simplifying
0.1(X + 30) + 0.3x = 7

Reorder the terms:
0.1(30 + X) + 0.3x = 7
(30 * 0.1 + X * 0.1) + 0.3x = 7
(3 + 0.1X) + 0.3x = 7

Solving
3 + 0.1X + 0.3x = 7

Solving for variable 'X'.

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

Add '-3' to each side of the equation.
3 + 0.1X + -3 + 0.3x = 7 + -3

Reorder the terms:
3 + -3 + 0.1X + 0.3x = 7 + -3

Combine like terms: 3 + -3 = 0
0 + 0.1X + 0.3x = 7 + -3
0.1X + 0.3x = 7 + -3

Combine like terms: 7 + -3 = 4
0.1X + 0.3x = 4

Add '-0.3x' to each side of the equation.
0.1X + 0.3x + -0.3x = 4 + -0.3x

Combine like terms: 0.3x + -0.3x = 0.0
0.1X + 0.0 = 4 + -0.3x
0.1X = 4 + -0.3x

Divide each side by '0.1'.
X = 40 + -3x

Simplifying
X = 40 + -3x

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