-7.8=5+X

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Solution for -7.8=5+X equation: 


Simplifying
-7.8 = 5 + X

Solving
-7.8 = 5 + X

Solving for variable 'X'.

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

Add '-1X' to each side of the equation.
-7.8 + -1X = 5 + X + -1X

Combine like terms: X + -1X = 0
-7.8 + -1X = 5 + 0
-7.8 + -1X = 5

Add '7.8' to each side of the equation.
-7.8 + 7.8 + -1X = 5 + 7.8

Combine like terms: -7.8 + 7.8 = 0.0
0.0 + -1X = 5 + 7.8
-1X = 5 + 7.8

Combine like terms: 5 + 7.8 = 12.8
-1X = 12.8

Divide each side by '-1'.
X = -12.8

Simplifying
X = -12.8

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