Question

Cine imi poate rezolva tema va rog 2(3×-7)=16 4×+7+×=22 2×+9=2+3× 10×-3=19+7 3(×+6)=2×+2 rezolvați o va rog​

Answer 1

Răspuns:

2(3x-7)=6

6x-14=6

6x=6+14=20

6x=20

X=20:6

X=3,33

4x+7+x=22

5x+7=22

5x=22-7=15

5x=15

X=15:5=3

2x+9=2+3x

9-2=3x-2x

7=x

X=7

10x-3=19+7

10x=19+7+3

10x=29

X=29:10

X=2,9

3(x+6)=2x+2

3x+18=2x+2

3x-2x=2-18

X=-16

Answer 2

2(3x-7)|:2

3x-7=8

3x=8+7

3x=15|:3

x=5

4x+7+x=22

5x+7=22

5x=22-7

5x=15|:5

x=3

2x+9=2+3x

2x-3x=2-9

-x=-7

x=7

10x-3=19+7

10x-3=26

10x=26+3

10x=29

x=29/10

3(x+6)=2x+2

3x+18=2x+2

3x-2x=2-18

x=-16