(3.1+x)+7.4=

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Solution for (3.1+x)+7.4= equation:


Simplifying
(3.1 + x) + 7.4 = 0

Remove parenthesis around (3.1 + x)
3.1 + x + 7.4 = 0

Reorder the terms:
3.1 + 7.4 + x = 0

Combine like terms: 3.1 + 7.4 = 10.5
10.5 + x = 0

Solving
10.5 + x = 0

Solving for variable 'x'.

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

Add '-10.5' to each side of the equation.
10.5 + -10.5 + x = 0 + -10.5

Combine like terms: 10.5 + -10.5 = 0.0
0.0 + x = 0 + -10.5
x = 0 + -10.5

Combine like terms: 0 + -10.5 = -10.5
x = -10.5

Simplifying
x = -10.5

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