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(3 xm- 11 ): 5+ 39 = 41​

Răspuns :

(3 × m -11):5 =41-39

(3 × m -11):5=2

3 × m -11 =2 × 5

3 × m -11=10

3 × m=10+11

3 × m=21

m=21:3

m=7