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Fill in the blank the proportion 5:7=_____:49 18:_____=6:4 3a - (b.a) - (c - d) + 4d + 5c - 8a = ​

Fill in the blank the proportion 5:7=_____:49 18:_____=6:4 3a - (b.a) - (c - d) + 4d + 5c - 8a = ​
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23 votes
Fill in the blank the proportion

5:7=_____:49
18:_____=6:4

3a - (b.a) - (c - d) + 4d + 5c - 8a =
​

asked
User StPaulis
by
7.9k points

1 Answer

2 votes

Answer:

(1) 3

(2) 12

(3) -ab+4c+5d-5a

answered
User Robert Pankowecki
by
8.8k points
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