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pls ex 4 si 5. pls pls pls pls pls pls pls pls pls pls pls pls pls​

Pls Ex 4 Si 5 Pls Pls Pls Pls Pls Pls Pls Pls Pls Pls Pls Pls Pls class=

Răspuns :

Răspuns:

stiu doar la 4 scz!!

4.

a) (7)-(9)=-2

b)|-7|+|-1|=

=7+1=

=8

II.

a)|x+7|=4

x=4-7

x=-3

|x|=3

b)x-5 mai mic sau egal -7

x={-5,-6,-7}

uite ca acm am rasp si la II

spor la scoala!!