Question

..............Va rog ajutati-ma​

Answer 1

Ce trebuie sa faci?Sa spui daca e A sau F?

Answer 2

Răspuns:

a)

2(x+1)= -7(x+3)+3(3x-5)-5

2x+2= - 7x-21+9x-15-5

2x+2= 2x-41

0x=-43

x=0

b)

-3(3x+1)+14=3(7x-3)-10

-9x-3+14=21x-9-10

-9x+11=21x-19

-9x-21x=-19-11

-30x= - 30 /:(-30)

x= 1

c)

14+2×[3-2(x-3)]:2=37

14+2×(3-2x+6):2=37

14+(6-4x+12):2=37

(6-4x+12):2=37-14

(6-4x+12):2=23

6-4x+12=46

6-4x=34

-4x=34-6

-4x=28 /:(-4)

x= -7

d) - 4-{6-[-3+(-3)+(-5-x)-7]-9}=1

-4-{6-[-3-3-5-x-7]-9}=1

-4-[6-(-18-x)-9]=1

-4-(6+18+x-9)=1

-4-(15+x)=1

-4-15-x=1

-19-x=1

-19-1=x

-20=x

x=-20

e)

5(7x-1)^0+2(x+1)= -7(x+3)+3(3x-5)+43

5+2x+2= -7x-21+9x-15+43

7+2x= 2x+7

0x=0

x=0

Explicație pas cu pas: