Пошаговое объяснение:
1.
19x = 76/4
19x = 19
x = 19/19
x = 1
2.
x/15 = 7.5/2.5
x/15 = 3
x = 15*3
x = 45
3.
1.8/0.6=x/5
3 = x/5
5*3=x
x = 15
4.
6.2/x = 93/0.3
6.2/x = 310
x = 310/6.2
x = 50
5.
x/0.5 = 1.96/1.4
x/0.5 = 1.4
x = 1.4 * 0.5
x = 0.7
Пошаговое объяснение:
1.
19x = 76/4
19x = 19
x = 19/19
x = 1
2.
x/15 = 7.5/2.5
x/15 = 3
x = 15*3
x = 45
3.
1.8/0.6=x/5
3 = x/5
5*3=x
x = 15
4.
6.2/x = 93/0.3
6.2/x = 310
x = 310/6.2
x = 50
5.
x/0.5 = 1.96/1.4
x/0.5 = 1.4
x = 1.4 * 0.5
x = 0.7