Arrange the like terms in Columns and add them
3x-4y,-17x+15y,8x-7y
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3x -4y
-17x +15y
+ 8x - 7y
..............
.6x+4y...
-17x +15y
+ 8x - 7y
..............
.6x+4y...
khushi2880:
thanks
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