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Maths Puzzle
Numerical Ability
what does r equal in this equation : 8r+3=5r+12?
also what does p equal in this equation : 9p-14=4p+11?
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book Other Question
How much pure acid should be mixed with 2 gallons of a 40% acid solution in order to get a 70% acid solution?
what does x equal in this equation?
-2w+4=-8