Question

A) x+(-3)=5
B)7+b=-3
C) -4+y=1
D) z+(-4)=-5
E)×+0=-2
Dau coroana,Va rog am nevoie urgent!!

Answer 1

a) x=5+3=8

b) b=-3-7=-10

c) y=1+4=5

d) z=-5+4=-1

e) x=-2

Answer 2

A) x+(-3)=5

x=5-(-3)

x=8

Probă:

înlocuim pe x cu 8 =>

8+(-3)=5 (adevarat )

B)7+b=-3

b=(-3)-7

b= -10

Proba :

7+(-10)=-3 (adevarat )

C) -4+y=1

y =1-(-4)

y=5

Proba :

-4+5=1 (adevarat )

D) z+(-4)=-5

z=-5-(-4)

z= -1

Proba :

(-1)+(-4)= -5 (adevarat )

E)×+0=-2

x=-2-0

x= -2

-2+0=-2 (adevarat)