exam Maths Puzzle Numerical Ability

6-(-5r)=5r-3

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exam Other Question

Solve: logbase2(1-x)+logbase2(4x+1)=0 on the lot at honest al's used yugo superstore there are 60 yugos. 20 of the yugos have had bad engines, 25 have had bad transmissions, 15 have bad engines and bad transmissions.