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3a-7a+6b-2b+8 = -4a+4b+8
2. 3a-6b+8-7a+2b-2=
3a-7a-6b+2b+8-2 = -4a-4b+6
3. no3 angka akhir kurung kedua berapa?
3a-7a+6b-2b+8
-4a+4b+8
b). -3a-6b+8-7a+2b-2
-3a-7a-6b+2b+8-2
-10a-4b+6
c). (3a+6b+8)-(-7a+2b-2)
3a+6b+8+7a-2b+2
3a+7a+6b-2b+8+2
10a+4b+10