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rezolvati in N ecuatia .x+7=10. b) x÷10=5​

Răspuns :

a.)
x+7= 10
x= 10-7
x= 3

b.)
x÷10= 5
x= 5×10
x= 50
x+7=10
x=10-7
x=3

a+b=S
a=S-b
b=S-a

x:10 = 5

x = deimpartit (D)
10= impartitorul (I)
5 = cat (C)

D= C x I

x= 5 x 10
x = 50