Question

Ex 10 va rogg ,dau fundita​

Answer 1

Răspuns:

a) 2(x-3)=-6 |:2

x-3=-3

x=0

b)- 4(x-2)=12 |:-4

x-2=-3

x=-3+2

x=-1

c)-3(x+1)=-6 |:-3

x+1=2

x=2-1

x=1

d)-7(x-3)=-14 |:-7

x-3=2

x=2+3

x=5

e)2(2x-3)=-10 |:2

2x-3=-5

2x=-5+3

2x=-2

x=-1

f)3(2x-3)=-39 |:3

2x-3=-13

2x=-13+3

2x=-10 |:2

x=-5

g)2(x-8)+4=-6

2x-16+4=-6

2x-12=-6

2x=6 |:2

x=3

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

-5x+15+7=2

-5x+22=2

-5x=2-22

-5x=-20 |:-5

x=4

i)-6(x+7)+3x=-42

-6x-42+3x=-42

-3x=-42+42

-3x=0

x=0