9x+3.1=7x+2.1

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Solution for 9x+3.1=7x+2.1 equation:


Simplifying
9x + 3.1 = 7x + 2.1

Reorder the terms:
3.1 + 9x = 7x + 2.1

Reorder the terms:
3.1 + 9x = 2.1 + 7x

Solving
3.1 + 9x = 2.1 + 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.
3.1 + 9x + -7x = 2.1 + 7x + -7x

Combine like terms: 9x + -7x = 2x
3.1 + 2x = 2.1 + 7x + -7x

Combine like terms: 7x + -7x = 0
3.1 + 2x = 2.1 + 0
3.1 + 2x = 2.1

Add '-3.1' to each side of the equation.
3.1 + -3.1 + 2x = 2.1 + -3.1

Combine like terms: 3.1 + -3.1 = 0.0
0.0 + 2x = 2.1 + -3.1
2x = 2.1 + -3.1

Combine like terms: 2.1 + -3.1 = -1
2x = -1

Divide each side by '2'.
x = -0.5

Simplifying
x = -0.5

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