6x+4.2=7x-9

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Solution for 6x+4.2=7x-9 equation:


Simplifying
6x + 4.2 = 7x + -9

Reorder the terms:
4.2 + 6x = 7x + -9

Reorder the terms:
4.2 + 6x = -9 + 7x

Solving
4.2 + 6x = -9 + 7x

Solving for variable 'x'.

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

Add '-7x' to each side of the equation.
4.2 + 6x + -7x = -9 + 7x + -7x

Combine like terms: 6x + -7x = -1x
4.2 + -1x = -9 + 7x + -7x

Combine like terms: 7x + -7x = 0
4.2 + -1x = -9 + 0
4.2 + -1x = -9

Add '-4.2' to each side of the equation.
4.2 + -4.2 + -1x = -9 + -4.2

Combine like terms: 4.2 + -4.2 = 0.0
0.0 + -1x = -9 + -4.2
-1x = -9 + -4.2

Combine like terms: -9 + -4.2 = -13.2
-1x = -13.2

Divide each side by '-1'.
x = 13.2

Simplifying
x = 13.2

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