Question

-0,25а*(-4)+5/6*(12а-3)=



Х+0,1=3х-4
15. 12

Answer 1

- 0,25а * (-4) + 5/6(12а - 3)  = а + 10а - 2,5 = 11а - 2,5
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0,1х/ 1,5 = (3х - 4)/12
1,5 *(3х - 4) = 12 * 0,1х
4,5х - 6 = 1,2х
4,5х - 1,2х = 6
3,3х = 6
     х = 1целая 9/11

  
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Answer 2

(8-6 1/4):(-5/8)-9*(-1/2+2/5)=

Answer 3

Помогите

Answer 4

= - 31/10 : - 31/20 + 48/10 : (- 1/6) * 100 = 2 - 144/5 * 100 = 2 - 2880 = - 2878

Answer 5

= 1ц.3/4 : (- 5/8 ) - 9 * (- 1/10) = - 14/5 + 9

Answer 6

Пишу по новой : = 1ц3/4 : (- 5/8) - 9*(- 1/10) = - 14/15 + 9/10 = -28/30 + 27/30 = - 1/30