Jawabanmu

2014-02-25T05:58:04+07:00
180 = (3x-15) +(2x-5)
180 = 3x + 2x -15 -5
180 =  5x -20
200 = 5x
x = 40

wux = 3x -15
wux = 3 x 40 -15
wux = 120 -15
wux = 105

xuz = 2x -5
xuz = 2 x 40 -5
xuz = 80 -5
xuz = 75

vuz = wux
vuz = 105