hitunglah x1 dan x2 dari; 2x1+3x2=48 x1-2x2=48

2x1 + 3x2 = 48 | x1
X1 - 2x2 = 48 | x2
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2x1 + 3x2 = 48
2x1 - 4x2 = 96
___________-
7x2 = -48
x2 = -48/7

X2 sub ke ...2)
x1 - 2x2 = 48
x1 - 2 (-48/7) = 48
x1 + 96/7 = 48
x1 = 48 - 96/7
x1 = 336/7 - 96/7
x1 = 240/7

Maka x1 = 240/7 , x2 = -48/7
(Note : klo bisa ubah ke pecahan campuran aja)