Question

Rozwiaz rownania

a). 97=2x-5

b).43=7+8x

c).17=11-12x

3 i dwie czecie =jedna drugax-jedna czecia

zrubcie mi to szybko:)

Answer 1

1. 2x= 102  x= 51

2.  8x=36  x=4,5

3. 12x=-0,5

4. 0,5x=4  x=8

Answer 2

a).

  97=2x-5

2x = 97 + 5

2x = 102    /:2

x= 51

 

b).

43=7+8x

8x = 43-7

8x = 36    /:8

x = 4 i4/8

x = 4 i 1/2

 

c).

17=11-12x

12x = 11 – 17

12x = - 6   /:12

x = -6/12

x = -1/2

 

d.

3 i 2/3 =1/2x- 1/3

11/3 = 1/2 x – 1/3   /* 6

22 = 3x – 2

3x = 22 + 2

3x = 24   /:3

x = 8