Question

Решите уравнения!
(1 2/7у - 1/2):2,5 = 5,2
22 * (17/26х- 3/4) = 5 1/13

Answer 1

(1 2/7 у - 1/2) :2,5=5,2
1 2/7 у - 1/2=5,2*2,5
1 2/7 у -1/2=13
1 2/7 у=13+1/2
у=13 1/2 : 1 2/7
у=27/2 * 7/9
у=21/2=10 1/2=10,5

22*(17/26 х -3/4)=5 1/13
17/26 х - 3/4=5 1/13 :22
17/26 х - 3/4=66/13 * 1/22
17/26 х - 3/4=3/13
17/26 х=3/13+3/4
17/26 х=12/52+39/52
17/26 х=51/52
х=51/52 :17/26
х=51/52 * 26/17
х=3/2=1 1/2=1,5