а) x/25 = 3 + 1/5 = 16/5
б) 38 : 2x = 19 • 538 / 2x = 9519x = 95x = 95 / 19x = 5
в) 0.7/x = 5.6/100.07 = 5.6 * xx = 0.07 / 5.6x ≈ 0.0125
г) 5x/5.25 = 3.8 / 1.9x / 1.05 = 2x = 2 * 1.05x = 2.1
а) x/25 = 3 + 1/5 = 16/5
б) 38 : 2x = 19 • 5
38 / 2x = 95
19x = 95
x = 95 / 19
x = 5
в) 0.7/x = 5.6/10
0.07 = 5.6 * x
x = 0.07 / 5.6
x ≈ 0.0125
г) 5x/5.25 = 3.8 / 1.9
x / 1.05 = 2
x = 2 * 1.05
x = 2.1