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2/1 * 7/10 = 14/10 which simplifies to 7/5, or 1 2/5, or 1.4
2 (+3) 5 (+9) 14 (+27) 41 (+81) 122 in this series... the difference is multiplied by 3. like 3,9,27,81,243...
It is 10. The two negatives cancel out and become a positive. Then 14/7=2 and 2x5=10
7,2. 7*2=14
multiplied to seventy and add to nine is impossible, but add up to 9 and multiplied to -70, or add up to -9 and multiplied to 70 are possible. In that case, 14 and -5 would do it (or -14 and 5)