#81 плиииз СРОЧНО СРОЧНО ПОЖАЛУЙСТАА!!!
1)
4 * x = 3 * 8/9
4x = 8/3
x = 8/3 * 1/4
x = 2/3
2)
7 * x = 5 * 2,8
7x = 14
x = 14 : 7
x = 2
3)
12 * x = 9 * 7
12x = 63
x = 63 : 12
x = 5,25
4)
5,2 * x = 8 * 6,5
5,2x = 52
x = 52 : 5,2
x = 10
5)
3,6 * x = 4,5 * 4
3,6x = 18
x = 18 : 3,6
x = 5
6)
4 * x = 15 * 1 1/3
4x = 15 * 4/3
4x = 20
x = 20 : 4