Question

Calculeaza 30-[4+5*(19-a)]+5*6=36​

Answer 1

$30 - (4 + 95- 5a) + 30 = 36 = \\ 30 - (99 - 5a) = 6 \\ - 99 + 5a = 6 - 30 \\ - 99 + 5a = - 24 \\ 5a = - 24 + 99 \\ \ \: 5 a = 7 5\\ a = 15$

sper ca e bine

Answer 2

30-(4+5(19-a))+5=36:6

30-(4+5(19-a))+5=6

30-(4+5(19-a))=6-5

30-(4+5(19-a))=1

(4+5*19-a)=30+1

4+5*19-a=31

5*19-a=31+4

5*19-a=35

19-a=35:5

19-a=7

a=19-7

a=12

19-12=7