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Video of the second volume of the seventh grade math book
Suppose that the number A is X and the number B is 2/3X-7.

Solution: X+2/3X-7= 14.

5/3X= 14+7=2 1

X=2 1×3/5= 12.6

2/3X-7 = 2/3× 12.6-7 = 8.4-7 = 1.4

Answer: A number is 12.6, and B number is 1.4.

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