Question

Rozwiąż kilka zadani z x z ułamkami pls

1) 15 i 3/5 + x = 20

2) 2/10 * x = 12m

3) x - 6 i 4/5 = 12 i 3/10

4) 15 i 1/2 - m = 10 i 3/4

5) 8 : x = 2/5

6) x + 7 i 2/5 +13 i 1/2 prosze o szybką odpowiedz!!!! :)

7 x - 1 i 1/10 = 55

8 x - 5 i 2/5 = 10

9 16 : x = 4/5

10 8 i 3/10 + x = 12

11 7 i 4/5 * x = 39

Answer 1

1)          15 i 3/5 + x = 20

x=20-15 3/5

x=4 2/5

2)           2/10 * x = 12m

2/10x=12 /:2/10

x=12*10/2

x=60

3)           x - 6 i 4/5 = 12 i 3/10

x=12 3/10+6 4/5

x=12 3/10+6 8/10

x=18 11/10

x=19 1/10

4)           15 i 1/2 - m = 10 i 3/4

-m=10 3/4-15 1/2

-m=10 3/4-15 2/4

-m=-4 3/4 /:(-1)

m=4 3/4

5)            8 : x = 2/5  /*x

8=2/5x /:2/5

x=8:2/5

x=8*5/2

x=20

6)            x + 7 i 2/5 =13 i 1/2  

x=13 1/2-7 2/5

x=13 5/10-7 4/10

x=6 1/10

7             x - 1 i 1/10 = 55

x=55-1 1/10

x=53 9/10

8            x - 5 i 2/5 = 10

x=10+5 2/5

x=15 2/5

9            16 : x = 4/5  /*x

16=4/5x /:4/5

x=16:4/5

x=16*5/4

x=20

10          8 i 3/10 + x = 12

x=12-8 3/10

x=3 7/10

11         7 i 4/5 * x = 39

7 4/5x=39  /:7 4/5

x=39:39/5

x=39*5/39

x=5