Question

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Answer 1

Răspuns:

Explicație pas cu pas:

[(3a+19):5-2] *11=35-2

[(3a+19):5-2] *11=33

[(3a+19):5-2] =33:11

(3a+19):5-2=3

(3a+19):5=3+2

(3a+19):5=5

3a+19=5*5

3a+19=25

3a=25-19

3a=6

a= 6:3

a=2