Question

2 1\3 x a =0.7

2.7 ; y=1 3\4 -0,85

(17 5\6 - 15 , 75)+ b = 3,5

2,125 -p = 1 5\6

x = razy

Answer 1

2 1\3 x a =0.7 

7/3 x a = 0,7 /x 3

7a = 2,1 /: 7

a = 0,3

 

2.7 ; y=1 3\4 -0,85

2,7 : y = 1,75 - 0,85

2,7 : y = 0,9 /x y

2,7 = 0,9y / : 0,9

y = 3

 

(17 5\6 - 15 , 75)+ b = 3,5

(107/6 - 15 3/4) + b = 3,5

(107/6 - 63/4 ) + b = 3,5

214/12 - 189/12 + b = 35/10

25/12 + b = 7/2

b = 7/2 - 25/12

b = 42/12 - 25/12

b = 17/12

b = 1 5/12

 

2,125 -p = 1 5\6

2 125/100 - p = 11/6

2 5/4 - p = 11/6

13/4 - p = 11/6

-p = 22/12 - 39/12

-p = -17/12

p = 17/12

p = 1 5/12