exam Maths Puzzle Numerical Ability

solve the system of linear equations
What is x?
5x+2y= -7
What is y?
x+3y=9

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exam Other Question

how to solve and grah this equation y=x3 - 1 An artist sold a painting for $410,000. She need some of the money in 6 months and the rest in 1 year. She can get a treasury bond for 6 months at 4.65% and one for a year at 4.91%