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a fost răspuns

Afla termenul necunoscut.
a. 17×39+x=1000
x+18×29=815
b. 124×19-x=1000
x-86×47=384
c. 97×12-x=832
x-45×36=159
Va rog ajutor e urgent!

Răspuns :

Biancab2004
a. 17×39+x=1000
663+X=1000
X=1000-663
X=337

x+18×29=815
X+522=815
X=815-522
X=293

b. 124×19-x=1000
2356-X=1000
X=2356-1000
X=1356

X-86×47=384
X-4042=384
X=384+4042
X=4426

c. 97×12-x=832
1164-X=832
X=1164-832
X=332

x-45×36=159       
X-1620=159
X=159+1620
X=1779

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