Question

Urgentttt. Dau coroana ex 11

Answer 1

Răspuns:

Explicație pas cu pas:

5x/2 + 3 = 10,75

5x/2 = 7,75

5x = 7,75*2 = 15,5

x = 15,5 : 5 = 3,1

___________

3x-2,7 = 1,11

3x = 3,81

x = 3,81 : 3 = 1,27

____________

0,25x + 1 = 3/2

0,25x = 3/2 - 1 = 1/2

0,25 = 25/100 = 1/4

x/4 = 1/2

x = 4/2 = 2

___________

x/9 - 3 = 5,25

x/9 = 8,25

x = 9*9,25 = 83,25

___________

0,(2)x + 3,5 = 3,75

0,(2)x = 0,25

2x/9 = 0,25

x = 9*0,25 : 2 = 2,25 ; 2 = 1.125

_____________

3x/5 + 11/9 = 7/3

3x/5 = 21/9 - 11/9 = 10/9

3x = 50/9

x = 50/27

______________

5x/6 - 1/2 = 1,25

5x/6 = 1,25 - 0,5 = 0,75 = 75/100 = 3/4

5x = 18/4 = 9/2

x = 9/10

______________

1,5 + x/4 = 4

x/4 = 2,5

x = 4 * 2,5 = 10