4x+6.9=x+15

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Solution for 4x+6.9=x+15 equation:


Simplifying
4x + 6.9 = x + 15

Reorder the terms:
6.9 + 4x = x + 15

Reorder the terms:
6.9 + 4x = 15 + x

Solving
6.9 + 4x = 15 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
6.9 + 4x + -1x = 15 + x + -1x

Combine like terms: 4x + -1x = 3x
6.9 + 3x = 15 + x + -1x

Combine like terms: x + -1x = 0
6.9 + 3x = 15 + 0
6.9 + 3x = 15

Add '-6.9' to each side of the equation.
6.9 + -6.9 + 3x = 15 + -6.9

Combine like terms: 6.9 + -6.9 = 0.0
0.0 + 3x = 15 + -6.9
3x = 15 + -6.9

Combine like terms: 15 + -6.9 = 8.1
3x = 8.1

Divide each side by '3'.
x = 2.7

Simplifying
x = 2.7

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