Question

Exercițiul 8 vă rog,complet si cu pași, nu doar rezultate.​

Answer 1

Răspuns:

a. 4(x+2)-3x=-17 c. 11-3(×+5)=2×+1

4x+8-3x=-17 11- 3×-15=2×+1

x= -17-8 -3×-2×=1-11+15

x=-25 -5×=5 ×=-1

b. 6(×+5)-3×=21 d. 32-7(×-5)=3(×-1)

6×+30-3×=21 32-7×+35=3×-3

3×=21-30 -7×-3×=-3-32-35

3×=-9 -10×=-70

×=-3 ×=7

e. 4(×-6)+2×=18 L.4(3×+2)+3(2×+3)=7(2×+5)+28

4×-24+2×=18 12×+8+6×+9=14×+35+28

6×=18+24 18×-14×=35+28-8-9

6×=42 4×=46

×=7 ×=11,5

f. 4(×+7)-15=3× m. 4(×+5)-5(×+3)=×-5

4×+28-15=3× 4x+20-5×-15=×-5

4×-3×=15-28 4×-5×-×=-5-20+15

×=-13 -2×=-10 ×=5

g. 14-8(×+3)=2× n. 2(×+3)-3(2×+1)=8(2×-1)-9

14-8×-24=2× 2x+6-6×-3=16×-8-9

-8×-2×=24-14 2×-6×-16×=-8-9-6+3

-10×=10 -20×=-20 ×=1

×=-1

h.6(×+3)-4=2×-42 o. 3(2×+3)-2(3×+2)=-3(×+2)+2

6×+18-4=2×-42 6×+9-6×-4=-3×-6+2

6×-2×=-42-18+4 3×=-6+2-9+4

4×=-56 3×=-9 ×=-3

×=-14

I. 6(×-4)+44=4(2×+1)+2× p. -3×+5-4(×-1)=-2(×+1)-24

6x-24+44=8×+4+2× -3×+5-4×+4=-2×-2-24

6×-8×-2×=4+24-44 -7×+2×=-2-24-5-4

-4×=-16 -5×=-35 ×=7

×=4

j. 5(2×-3)-4×=3(×-8)+63 r. x-15+3(×+1)=5(×-2)+11

10×-15-4×=3×-24+63 x-15+3×+3=5×-10+11

10×-4×-3×=15-24+63 4×-5×=-10+11+15-3

3×= 54 -×=13 ×=-13

x=18

k. 3(×+2)-8=2(4×+3)-3× a. 5(×+2)-2(2×+3)=34-5×

3x+6-8=8×+6-3× 5×+10-4×-6=34-5×

3×-8×+3×=6-6+8 5×-4×+5×=34-10+6

-2×=8 6×=30 ×=5

×=-4