Question

Pomóżcie!!! Równania z matmy:

4+2(x-1)=6

5-2(Y+3)=8

-1+4(2z-1)=3

6(3y+2)-5(4y+6)=(-6)

-7(2z-3)-5(4-3z)=1

Answer 1

4+2(x-1)=6

4+2x-2=6

2x=4

x=2

 

5-2(Y+3)=8

5-2y-6=8

2y=9

y=4,5

 

-1+4(2z-1)=3

-1+8z-4=3

8z=8

z=1

 

6(3y+2)-5(4y+6)=(-6)

18y+12-20y-30=-6

-2y=12

y=-6

 

-7(2z-3)-5(4-3z)=1

-14z+21-20+15z=1

z=0

Answer 2

4+2(x - 1)=6

4+2x-2=6

2x=6+2-4

2x=4|:2

x=2

 

5-2(Y+3)= 8

5-2Y-6=8

-2Y=8+6-5

-2Y=9

Y=-4.5

 

-1+4(2z - 1)= 3

-1+8z-4=3

8z=3+4+1

z=1

 

 reszty nie wiem i tych nie jestem pewna