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bilangan ganjil = 1 + 3 + 5
1 = x
3 = x + 2
5 = x + 4
x + x + 2 + x + 4 = 180
3x + 6 = 180
3x = 180-6
3x = 174
x = 174/3 = 58
1 = x ----- 58
3 = x + 2 ----- 58 + 2 = 60
5 = x + 4 ------- 58 + 4 = 62
58 + 60 + 62 = 180
jumlah bilangan terbesar dan terkecil = 62+58 = 120
180= (x+1) +(x+3) +(x+5)
180= 3x + 9
3x=180-9
3x= 171
x= 57
bil terkecil=57+1=58
bil tengah=57+3=60
bil terbesar=57+5= 62