3x + 4x + 8x = 30
15x = 30
x = 30 ÷ 15
x = 2
3х = 3 * 2 = 6
4х = 4 * 2 = 8
8х = 8 * 2 = 16
Відповідь: 6, 8, 16
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3x + 4x + 8x = 30
15x = 30
x = 30 ÷ 15
x = 2
3х = 3 * 2 = 6
4х = 4 * 2 = 8
8х = 8 * 2 = 16
Відповідь: 6, 8, 16