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Verified answer
Misal: bilangan pertama = x dan bilangan kedua = y.r=U2/U1
y/x = 3/4
4y = 3x
x=4y/3 ...(1)
(y-4)/(x+12) = 3/2
2y-8 = 3x+36
2y - 3x = 44 ...(2)
substitusikan x=4y/3 ke pers (2):
2y -3(4y/3) = 44
2y - 4y = 44
-2y = 44
y = -22
x = 4y/3
x=4(-22)/3
x=-88/3
x × y = 845 1/3