+ / - / • /:
Hello ... I have a mystery here ... Nobody I Know it has got it out so far ...
I have to use the above numbers (1,3,4,5,5) all, however, you can and would have to use them everyone only once. The above-mentioned compensation (+, -,:, •) must and may also be used only once.
The result should be at the end 7.
clamps may be used.
I hope someone can help me.
PS: The question is from an expert book for 4. Klässler