Question

cineva expert la mate? va rog ​

Answer 1

Răspuns:

1. a=0

b= -3

c= 3

d= -10

2. a=6

b=0

3. a=3

b=25

Answer 2

Răspuns:

1.

a) (+7)+(-7)=+7-7=0.

b)(-7)+(+4)=-7+4=-3

c)(+15)+(-10)=15-10=5

d)(-20)+(+10)=-20+10=-10

2.

a)(-10)+(+13)+(-16)+(+19)=-10+13-16+19=+6

b)(+21)+(-22)+(-23)+(+24)=21-22-23+24=0

3.

c)-3+|-4+8|+|-3+5|=-3+4+2=9

d)-25+|-12+70-8|=-25+50=+25.

Sper că te-am ajutat!