Question

Rezolvati in multimea Z ecuatiile:
a)(x-12)+(16-2x)=14;
b)(x+25)-(x-12)=13;
c)2x-6=14-2x;
d)(44-x)+(x-35)=0;

Va rog sa aratati cum ati facut nu doar rezultatul.Va rogg!!!!!

Answer 1

[tex]a)(x-12)+(16-2x)=14\\ x-12+16-2x=14\\ -x+4=14\\-x=14-4\\-x=10\\x=-10\\ b) (x+25)-(x-12)=13\\ x+25-x+12=13\\ 0x+37=13\\ 0x=13-37\\0x=-24\\ x=-24:0\\ S=multime vida\\ c) 2x-6=14-2x\\ 2x+2x=14+6\\ 4x=20\\ x= 20:4\\ x=5\\ d)(44-x)+(x-35)=0\\ 44-x+x-35=0\\0x=-44+35\\0x=-9\\x=(-9):0\\ S= multime vida[/tex]