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2x+3y= 30700 ( ×2 ) 4x+6y= 61400
-------------------------------------------------------------- -
Total yang ynya adalah | y= 6500
2×+3.6500=30700
x= 5600
x+y= 5600+6500= 12100
Garpu = y
Diket = 4x + 5y = 54.900
2x + 3y = 30.700
Ditanya = x dan y ?
Jawab = 4x + 5y = 54.900
2x + 3y = 30.700 (dikali 2 )
Jadi =
4x + 5y = 54.900
4x + 6y = 61.400
-------------------------- -
-1y = -6500
y = 6500
4x + 5y = 54.900
4x + 5 x 6500 = 54.900
4x + 32.500 = 54.900
4x = 54.900 - 32.500
4x = 22.400
x = 22.400 / 4
= 5600
Jadi 1 Sendok (x) adalah Rp.5.600,- dan 1 Garpu (y) adalah Rp. 6.500,-
Total = Rp. 12.100,-