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Rezolvati ecuațiile:​

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Răspuns :

Răspuns:

1) a)-4x=8

x=8/-4

x=-2

b)-3x+1=10

-3x=10-1

-3x=9

x=9/-3

x=-3

2) a)-7x-8=3x+12

-7x-3x=12+8

-10x=20

x=20/-10

x=-2

b)3(2x-4)-(x-3)=x-1

6x-12-x-3=x-1

5x-9=x-1

5x-x=-1+9

4x=8

x=8/4

x=2

c)-3x+4=2x-1

-3x-2x=-1-4

-5x=-5

x=-5/-5

x=1

d)-(2x+3)=1-4(2x-8)

-2x+3=1-8x+32

-2x+3=33-8x

-2x-8x=33-3

-10x=30

x=30/-10

x=-3

e)-2(x+1)=-2x-2

-2x-2=-2x-2

-2x+2x=-2+2

0=0

f)-2(x+1)=-2x+2

-2x-2=-2x+2

-2x+2x=2+2

0=4

Sper sa-ti fie de folos!