Решите уравнение:1)(1/3+1/2)×x=3,752)(3/5-0,25)×x=4,9

Question

Решите уравнение:
1)(1/3+1/2)×x=3,75
2)(3/5-0,25)×x=4,9

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Answer 1

(1/3+1/2)*х=3,75
(2/6+3/6)*х=3,75
5/6х=3,75
5/6х=3 75/100
5/6х=3 3/4
х=3 3/4:5/6
х=15/4:5/6
х=15/4*6/5
х=9/2
х=4,5


(3/5-0,25)*х=4,9
(3/5-25/100)*х=4,9
(3/5-1/4)*х=4,9
(12/20-5/20)*х=4,9
7/20х=4 9/10
х=4 9/10:7/20
х=49/10*20/7
х=14

Answer 2

1) (1/3+1/2)х=3,75
5/6х=3,75
Х= 3 3/4 :5/6
Х= 4,5

2) 3/5 = 0.6
(0.6- 0.25) х =4.9
0.35х=4.9
Х= 4.9 : 0.35
Х=14