SOAL :
1) [ 3X - 2Y ] - [ X - 3Y ]
= [ 3X - X ] - [ 2 - 3 ]Y
= [ 3 - 1 ]X - [ -5Y ]
= 2X - [ -5Y ]
= 2X + 5Y
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SOAL :
1) [ 3X - 2Y ] - [ X - 3Y ]
= [ 3X - X ] - [ 2 - 3 ]Y
= [ 3 - 1 ]X - [ -5Y ]
= 2X - [ -5Y ]
= 2X + 5Y