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Alesiastoica32
a fost răspuns

afla numarulx. X x 5=85,X:8=165,90:X=9, 12:X=16:8, X x 10=80:2 ,X+X=245+X

Răspuns :

Primăvară2017
X x 5=85
X=85:5
X=17


X:8=165
X=165×8
X=1 320


90:X=9
X=90:9
X=10


12:X=16:8
12:X=2
X=12:2
X=6


X x 10=80:2
X x 10=40
X=40:10
X=4


X+X=245+X
2X-X=245
X=245

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