(1,75+х)*7=30,1
12,25 + 7x = 30,1
7x = 30,1 - 12,25
7x = 17,85
x = 2,55
(1,75 + x) * 7 = 30,1
1,75 * 7 + 7x = 30,1
x = 17,85 : 7
(1,75 + 2,55) * 7 = 30,1
30,1 = 30,1
(1,75+х)*7=30,1
12,25 + 7x = 30,1
7x = 30,1 - 12,25
7x = 17,85
x = 2,55
(1,75 + x) * 7 = 30,1
1,75 * 7 + 7x = 30,1
12,25 + 7x = 30,1
7x = 30,1 - 12,25
7x = 17,85
x = 17,85 : 7
x = 2,55
(1,75 + 2,55) * 7 = 30,1
30,1 = 30,1