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Ruslanbugneac
a fost răspuns

REZOLVA ECUATIILE:
1)3·(2x+5)+19=82
2)5·(4x+4)-32=63
3)9·(5-3x)+71=89
4)(3x+2):4-2=3

Răspuns :

Catastef2110
1) 6x+15+19=82 => 6x=48 => x=8
2) 20x+20-32=63 => 20x=75 =>x = 75 pe 20 =3,75
3) 45-27x+71=89 => -27x=-27 => x=1
4) (3x+2):4=3+2=> (3x+2):4=5 => 3x+2=20 => 3x=18 => x=6

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