9(2a+4b-7c)-4(b-c)-7(-c-4b)
Answers
Answered by
3
Step-by-step explanation:
18a+36b-63c-4b+4c+7c+28b
18a+12b-52c
Answered by
0
Answer:
9-7=2
2-4=-2
4b-4b=0b+b=1b
7c-2c=5c
=-2*2a+1b+5c
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