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Maths Puzzle
Numerical Ability
Simplify the expression
(-3a^-3 b^7 / 2a^4 b^2)^3
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book Other Question
In the first NFL championship played in 1967, Green Bay and Kansas City scored a total of 45 points. Green Bay won by 25 points. What was the score?
Sorry if the subject is wrong!
My question is:
3x-y= -3/2
4x+y=5
My work:
4x+y=5
-4x -4x
From there I get really confused! Thanks for the help!