exam Maths Puzzle Numerical Ability

Solve and check for X :

[5/(x+6)]+[2/(x^2+7x+6)]=[3/(x+1)]

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exam Other Question

Please help! I don't understand how to put the following 2x2 matrix in matrix form. I know how to augment the matrix, but i cant solve it. I know the augmented answer is [-5 7 | The following information is the cost of living (in thousands of dollars) for two cities for the years 2003 and 2005.

Year 2003 2005

cityA 35 39

cityB