Question

2x+2*2x=48

2*(y-2)+2*(y+1)=22

2*(w-2)+2*(2w-3)=50

1-2*(x+1)=x

4*(2x+3)=2x-2

Obliczenia pliss szybko c ;

Answer 1

2x+2*2x=48 =

2x+4x =48

6x=48/6

x=8

 

2*(y-2)+2*(y+1)=22

2y-4+2y+2=22

2y+2y=22-2+4

4y=24/4

y=6

 

2*(w-2)+2*(2w-3)=50

2w-4+4w-6=50

2w+4w=50+6+4

6w=60/6

w=10

 

1-2*(x+1)=x

1-2x-2=x

-2x-x=2-1

-3x=1/3

x=-1/3

 

4*(2x+3)=2x-2

8x+12=2x-2

8x-2x=-2-12

6x=-14

x=2 i 2/6 czyli 2 i 1/3