Question

Aratati ca urmatoarele ecuatii au ca multime a solutilor Z
2(x+3)-5=2x+1
-3(2-x)+5=3x-1
5(-3×+2)+7x=4(2-2x)+2
AM NEVOIE URGENT DAU COROANA

Answer 1

2x+6-5=2x+1
2x+1=2x+1 => x apartine lui Z ori care nr ar fi x

-6+3x+5=3x-1
3x-1=3x-1 LA FEEL

-15x+10+7x=8-8x+2
-8x+10=-8x+10 LA FEEL