8.1x+9=5.1x-3

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Solution for 8.1x+9=5.1x-3 equation:


Simplifying
8.1x + 9 = 5.1x + -3

Reorder the terms:
9 + 8.1x = 5.1x + -3

Reorder the terms:
9 + 8.1x = -3 + 5.1x

Solving
9 + 8.1x = -3 + 5.1x

Solving for variable 'x'.

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

Add '-5.1x' to each side of the equation.
9 + 8.1x + -5.1x = -3 + 5.1x + -5.1x

Combine like terms: 8.1x + -5.1x = 3x
9 + 3x = -3 + 5.1x + -5.1x

Combine like terms: 5.1x + -5.1x = 0.0
9 + 3x = -3 + 0.0
9 + 3x = -3

Add '-9' to each side of the equation.
9 + -9 + 3x = -3 + -9

Combine like terms: 9 + -9 = 0
0 + 3x = -3 + -9
3x = -3 + -9

Combine like terms: -3 + -9 = -12
3x = -12

Divide each side by '3'.
x = -4

Simplifying
x = -4

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