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KingDarius
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Va rog explicatimi

(x-1)+2(x-2)+3(x-3)+4(x-4)=100


Răspuns :

Mihai994
x-1+2x-4+3x-9+4x-16=100
10x-30=100
10x=100+30
10x=130
x=130÷10
x=13
Togoeradu
(x-1)+2(x-2)+3(x-3)+4(x-4)=100
x-1+2x-4+3x-9+4x-16=100
10x-30=100
10x=100+30
10x=130
x= 130:10
x=13

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