exam Maths Puzzle Numerical Ability

Please solve this by elimination...

4x+5y+7

6x-5+7-9x

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exam Other Question

warren has 40 coins(all nickels dimes and quarters) worth 4.05. he has 7 more nickels than dimes. how many quarters does warren have? Find the equation, in standard form, with all integer coefficients, of the line perpendicular to 3x � 6y = 9 and passing through (-2, -1)