Question

Rezolvati in multimea Z Ecuatia
a)(x-12)+(16-2x)=14
b)2x-6=47-2x
c)(x+25)-(x-12)=13
d)(44-x)+(x-35)=0

Answer 1

a)(x-12)+(16-2x)=14
x-12+16-2x=14
-x+4=14
x=4-14
x=-10

b)2x-6=47-2x
2x+2x=47+6
4x=53
x=53/4    nu apartine lui Z  (ori e scris ceva gresit)

c)(x+25)-(x-12)=13
x+25-x+12=13
2x+37=13
2x=-24
x=-12

d)(44-x)+(x-35)=0
44-x+x-35=0
0=9  nu are solutii