Dinafabianask
a fost răspuns

 ecuatia:3x-35=7x-28
ecuatia:5(x-7)=3(x-4)-13

Răspuns :

a)3x-35=7x-28  3x-7x=-28+35  -4x=7  x=-7/4      b)5(x-7)=3(x-4)-13   5x-35=3x-12-13   5x-3x=-25+35  2x=10  x=10/2 x=5
Mihailolteanask
3x-35=7x-28
28-35=7x-3x
4x=-- 7
x= -7/4
5x-35=3x-12-13
5x-35=3x-25
5x-3x=35-25
2x=10
x=10/2
x=5

Ask Alte intrebari