Помогите пожалуйста с математикой. Задание 123 и 125
123)
1)
3 * x = 15 * 6
3x = 90
x = 90 : 3
x = 30
2)
5 * y = 50 * 9
5y = 450
y = 450 : 5
y = 90
3)
26 * z = 39 * 2
26z = 78
z = 78 : 26
z = 3
4)
24 * t = 66 * 4
24t = 264
t = 264 : 24
t = 11
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125)
16 * a = 20 * 4
16a = 80
a = 80 : 16
a = 5
40 * c = 25 * 8
40c = 200
c = 200 : 40
c = 5
27 * b = 39 * 9
27b = 351
b = 351 : 27
b = 13
49 * d = 32 * 12
49d = 384
d = 384 : 49
d = 7 41/49