Question

Rezolvati ecuatiile .

Answer 1

Sper ca te-am ajutat !

Answer 2

A). b). x-(7^2-4*11)=29*2-2^5 => x-(49-44)=232-32=> x-5=200=>x=205

c). 6x:15+7^2*5=15^2+17*3-27=>6x:15+245=225+24=>6x:15=249-245=>6x:15=4=> 6x=4*15=>6x=60=>60:6=10=>x=10

d).x-(29*5-12^2)=25^2-2*11*10=>x-(145-1440=625-220=>x-1=405=>x=405+1=406=>x=406

B). a). 18:[(25-5*x)*2-11]=2 => 18:[25-5x*2-11]=2=>18:(14-10x)=2=> 14-10x=2
-10x=14-2=>-10x=12|*-1=> 10x=-12=> x=-12/10(supra)=> amplificam cu 2=|> x=-6/5(supra)=> 18:(-)6/5=> 18:5/6, simplificam pe 18 cu 6< dandu-ne 3*5=15=> x=15 
b). il rezolv