5.5+(-6.9)=

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Solution for 5.5+(-6.9)= equation:


5.5+(-6.9)=0

We simplify the equation to the form, which is simple to understand 
5.5+(-6.9)=0

Remove unnecessary parentheses
+5.5-6.9=0

We move all terms containing  to the left and all other terms to the right. 
0=0-5.5+6.9

We simplify left and right side of the equation. 
0=+1.4

0=1.4

The left and right sides are not equal, therefore there is no solution. This equation is invalid.

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