beth50
beth50
26-04-2017
Mathematics
contestada
I need help with 7-10 please!
Respuesta :
Аноним
Аноним
26-04-2017
7:
3/8 = 6/x
3x = 48
x = 16
8:
4/5 = (x+7)/40
160 = 5x + 35
5x = 125
x = 25
9:
3/8 = 12/(x-3)
3x - 9 = 96
3x = 105
x = 35
10:
4/1 = (3x+6)/x
4x = 3x + 6
x = 6
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