Ответ:
a) x - 8/15x = 7/15
7/15x = 7/15
x = 1
б) x -7/9x = 1 1/3
x - 7/9x = 4/3
2/9x = 4/3
x = (4×9)/(3×2)
x = 6
в) k - 1/6k = 5
5/6k = 5
k = (6×5)/5
k = 6
г) (7,1c + c) : 0,3 = 189
7,1c + c = 56,7
8,1c = 56,7
c = 7
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
Ответ:
a) x - 8/15x = 7/15
7/15x = 7/15
x = 1
б) x -7/9x = 1 1/3
x - 7/9x = 4/3
2/9x = 4/3
x = (4×9)/(3×2)
x = 6
в) k - 1/6k = 5
5/6k = 5
k = (6×5)/5
k = 6
г) (7,1c + c) : 0,3 = 189
7,1c + c = 56,7
8,1c = 56,7
c = 7