Algebra Question Addition. : 7a-2b-3c,-9a+5b-3d,-2a-6b+9c,8a-5c-d

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Add the a's: (7-9-2+8)a=4a; add b's: (-2+5-6)b=-3b; add c's: (-3+9-5)c=c; add d's: (-3-1)d=-4d.

Put them together: 4a-3b+c-4d.

by Top Rated User (1.1m points)

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