18+18+18+9=

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Solution for 18+18+18+9= equation:


18 + 18 +18 +9 =0

We simplify the equation to the form, which is simple to understand 
18+18+18+9=0

We move all terms containing  to the left and all other terms to the right. 
0=0-18-18-18-9

We simplify left and right side of the equation. 
0=-63

0=-63

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

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