Question

Rezolvati in Z ecuatiile:a) 9(x-2)=63,b) 5(x+3)=2(5x-5),c)2(4x+1)=2(5x-7),d)2(-x+5)=-8(3x+2)+56,e)1-4×[-5×(x-2)]=21,f)5(x-2)-7(x+3)+35=0,g)(x+3)(x-7)=0,h)(-2x+6)(x+3)=0 va rog e urgent!

Answer 1

a)9(x-2)=63
x-2=7
x=7+2
x=9
b)5(x+3)=2(5x-5)
5x+15=10x-10
5x-10x=-10-15
-5x=-25
x=-5:-25
x=5
c)2(4x+1)=2(5x-7)
4x+1=5x-7
4x-5x=-7-1
-x=-8
x=8
nu am timp sa le calculez pe toate scuze