0.8x+0.6(x+9)=12.4

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Solution for 0.8x+0.6(x+9)=12.4 equation: 


Simplifying
0.8x + 0.6(x + 9) = 12.4

Reorder the terms:
0.8x + 0.6(9 + x) = 12.4
0.8x + (9 * 0.6 + x * 0.6) = 12.4
0.8x + (5.4 + 0.6x) = 12.4

Reorder the terms:
5.4 + 0.8x + 0.6x = 12.4

Combine like terms: 0.8x + 0.6x = 1.4x
5.4 + 1.4x = 12.4

Solving
5.4 + 1.4x = 12.4

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 + 1.4x = 12.4 + -5.4

Combine like terms: 5.4 + -5.4 = 0.0
0.0 + 1.4x = 12.4 + -5.4
1.4x = 12.4 + -5.4

Combine like terms: 12.4 + -5.4 = 7
1.4x = 7

Divide each side by '1.4'.
x = 5

Simplifying
x = 5

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