Question

Va rog exercițiul 5 și 6 ,repedeeee,unde nu intelegeti va spun eu,dau 64 de puncte și dau și coroana,va rooog urgent ​

Answer 1

Explicație pas cu pas:

a) 7x-14=0

7×=14

×=14/7

×=2

b)4×+12=0

4×=-12

×=-12/4

×=-3

c) -9×+27=0

-9×=-27

9×=27

×=27/9

×=3

d)-4×-36=0

-4×=36

×=-36/4

×=9

e)2×+4=-10

2×=-10-4

2×=-14

×=-14/2

×=-7

f) 10=7×-4

7×=10+4

7×=14

×=14/2

×=7

g)6=4×-2

4×=6+2

4×=8

×=8/4

×=2

h)-7=4×+1

4×=-7-1

4×=-8

×=-8/4

×=-2

i) 11=2×+3

2×=11-3

2×=8

×=8/2

×=4

j) 5×-6=14

5×=14+6

5×=20

×=20/5

×=4

k)5×-1=9

5×=9+1

5×=10

×=10/5

×=2

l)-4×+1=-15

-4×=-15-1

-4×=-16

4×=16

×=16/4

×=4

m)5×+17=2

5×=2-17

5×=-15

×=-15/5

×=-3

n)-6×+4=-8

-6×=-8-4

-6×=-12

6×=12

×=12/6

×=2

o)8×+6=-2

8×=-2-6

8×=-8

×=-8/8

×=-1

p)5×=4×+1

5×-4×=1

×=1

6) A 3×=6

×=6/3

×=2

A={2}

B -7×=0

×=0

B={0}

C -2×=10

×=-10/2

×=-5

C={5}

D -×-5=0

-×=5

×=-5

D={-5}

E ×-7=3

×=3+7

×=10

E={10}

Answer 2

Răspuns:

a)7x-14=0 b)4x+12=0 4x=-12 x=-3

7x=14

x=14:7=2

c)-9x+27=0 -9x=27 -x=3 /×(-1) x=-3

d)-4x-36=0 -4x=36 -x=9/×(-1) x=-9

e)2x+4=-10 2x=-10-4 2x=-14 x=-7

f)10=7x-4 -7x=-10-4 -7x=-14/×(-1) 7x=14 x=2

g)6=4x-2 -4x=-6-2 -4x=-8/×(-1) x=2

h)5x-1=9 5x=9+1 5x=10 x=2

i)11=2x+3 -2x=3-11 -2x=-8/×(-1) 2x=8 x=4

j)5x-6=14 5x=14+6 5x=20 x=4

k)5x-1=9 5x=9+1 5x=10 x=2

l)-4x+1=-15 -4x=-15-1 -4x=-16/×(-1) 4x=16 x=4

m)5x+17=2 5x=2-17 5x=-15 x=-3

n)-6x+4=-8 -6x=-8-4 -6x=-12/×(-1) 6x=12 x=2

o)8x+6=-2 8x=-2-6 8x=-8 x=-1

p)5x=4x+1 5x-4x=1 x=1

6)3x=6 x=2 A={2}

-7x=0 x=0 B={0}

-2x=10 /×(-1) x=-5 C={-5}

-x-5=0 -x=5 /×(-1) x=-5 D={-5}

x-7=3 x=3+7 x=10 E={10}

3(x+1)=3x+3 3x+3=3x+3 3x-3x=3-3=0 F={0}

-7x=-5x/×(-1) x=5/7 G={5/7}

2(x+1)=2x-5

2x+2=2x-5

2x-2x=-5-2

H={Mulțimea vida}

Explicație pas cu pas:

Sper că te-am ajutat!Mult succes!