x+2.1=8.4

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Solution for x+2.1=8.4 equation: 


Simplifying
x + 2.1 = 8.4

Reorder the terms:
2.1 + x = 8.4

Solving
2.1 + x = 8.4

Solving for variable 'x'.

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

Add '-2.1' to each side of the equation.
2.1 + -2.1 + x = 8.4 + -2.1

Combine like terms: 2.1 + -2.1 = 0.0
0.0 + x = 8.4 + -2.1
x = 8.4 + -2.1

Combine like terms: 8.4 + -2.1 = 6.3
x = 6.3

Simplifying
x = 6.3

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