1/2x + 1/3y =7
2x - y = 5
mohon bantuannya.....please
½ x + ⅓ y = 7 -----> 3x + 2y = 42
2x - y = 5 ----------> 4x - 2y = 10
............................------------------ +
..................................... 7x = 52
....................................... x = 52/7 .......... jawaban
2(52/7) - y = 5
y = 104/7 + 5
y = 139/7 ................. jawaban
sehinggga (x,y) yang memenuhi adalah (52/7 , 139/7)
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½ x + ⅓ y = 7 -----> 3x + 2y = 42
2x - y = 5 ----------> 4x - 2y = 10
............................------------------ +
..................................... 7x = 52
....................................... x = 52/7 .......... jawaban
2x - y = 5
2(52/7) - y = 5
y = 104/7 + 5
y = 139/7 ................. jawaban
sehinggga (x,y) yang memenuhi adalah (52/7 , 139/7)