0.3(x+10)+x=6.9

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Solution for 0.3(x+10)+x=6.9 equation:


Simplifying
0.3(x + 10) + x = 6.9

Reorder the terms:
0.3(10 + x) + x = 6.9
(10 * 0.3 + x * 0.3) + x = 6.9
(3 + 0.3x) + x = 6.9

Combine like terms: 0.3x + x = 1.3x
3 + 1.3x = 6.9

Solving
3 + 1.3x = 6.9

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 + -3 + 1.3x = 6.9 + -3

Combine like terms: 3 + -3 = 0
0 + 1.3x = 6.9 + -3
1.3x = 6.9 + -3

Combine like terms: 6.9 + -3 = 3.9
1.3x = 3.9

Divide each side by '1.3'.
x = 3

Simplifying
x = 3

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