x = 6
Объяснение:
25x - 100 = 10x + 40 + 100 - 25x
25x + 25x - 10x = 100 + 100 + 40
40x = 240
x = 240 / 40
x = 6
Объяснение:
25x - 100 = 10x + 40 + 100 - 25x
25x + 25x - 10x = 100 + 100 + 40
40x = 240
x = 240 / 40
x = 6