exam Maths Puzzle Numerical Ability

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Solve for the value of x: (4x-35)/3 = 9(1-x)

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exam Other Question

SOLVE BY GRAPHING
1. 2X-Y=4
2X-Y=6 Lynn Ogen invested some money at 9% interest and $100 less than that at 7% interest. Her total annual interest was $73. How much did she invest at 7% interest?