167. Реши уравнения. x : 20 = 40 * 3 210 : x = 420 : 6 x * 110 = 110 480 : x = 480 x - 260 = 0 y + 0 = 300

Решение уравнений: 1) \(x : 20 = 40 \cdot 3\) \(x : 20 = 120\) \(x = 120 \cdot 20\) \(x = 2400\) 2) \(210 : x = 420 : 6\) \(210 : x = 70\) \(x = 210 : 70\) \(x = 3\) 3) \(x \cdot 110 = 110\) \(x = 110 : 110\) \(x = 1\) 4) \(480 : x = 480\) \(x = 480 : 480\) \(x = 1\) 5) \(x - 260 = 0\) \(x = 260\) 6) \(y + 0 = 300\) \(y = 300\)