exam Maths Puzzle Numerical Ability

log base 7 of x=-2

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exam Other Question

Find the midpoint of the line segment PQ
P(5,4)Q( 2,8) Again, this is from my nephews Home School course, and it stumps me. Thank you in advance for your help. "One number is 11 more than twice another number. If the sum of the numbers is twice their difference, find the numbers."