omallysimba
omallysimba
22-10-2020
Mathematics
contestada
. help please and fast 15 points
Respuesta :
lilatheflower
lilatheflower
22-10-2020
3) 4x + 12x = 320
16x = 320
divide 16 by both sides
x = 20
4) 3.5z - 2.7z = -6
0.8z = -6
divide 0.8 both sides
z = -7.5
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