Subract some of 13x-4y+72 and 6x+3y-62from the difference of 6x-4y-42and 2x+4y-7z dhiniki horizontal method and veritcal method lo ans ivvu
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Sum of 13x-4y+72 and 6x+3y-62= 19x-y+10.........1
Difference of 6x-4y-42and 2x+4y-72=4x-8y+30....2
DIFFERENCE 2-1 -15X-7y+20
Difference of 6x-4y-42and 2x+4y-72=4x-8y+30....2
DIFFERENCE 2-1 -15X-7y+20
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