200 -(48 : t)x45 = 20
- (48 : t)x45 = 20 -200
-(48 : t)x45 = -180 x(-1)
48: t = 180 : 45
48 : t = 4
t = 48 : 4
t = 12
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200 -(48 : t)x45 = 20
- (48 : t)x45 = 20 -200
-(48 : t)x45 = -180 x(-1)
48: t = 180 : 45
48 : t = 4
t = 48 : 4
t = 12