Question

Rezolvaţi, în Z, ecuațiile:
a) x+8 = 1;
c) x+3=-10;
e) 13=-x-10;
g) 2x+1=-21;
bl-x+5 = 20;
d) -x -6=14;
f) -x +7=-12;
h)-2x+1=15;

Answer 1

Răspuns:

a)x=8-1=7

c)x=-10-3=-13

e)x=13-(-10)=-23(cred)

g)2x=-21-1=-22

x=-22-2=-24

d)-x=14-6=+8

f)-x=-12-7=-19

h)-2x=15-1=+14

-2x=14

x=14-2=+12

Spor!!