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Maths Puzzle
Numerical Ability
tobin has 66 coins that are all pennies and nickels. the total amount of money she has is $2.38. howm many pennies and kickels does she have?
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Hello,
Can you please show me how to simplify this? I need to know in steps. (x-2) (2x+3)
Please help me do this the cramer rule in math.
x + 3y z=-2
2x + 5y + z=-5
x + 2y +3z= 6