exam Maths Puzzle Numerical Ability

Add. 19 + (-20) + 2 + (-19)

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exam Other Question

Which ordered pair is a solution of : 5x-2y = 12 I am having problems with solving and graphing the following problem. Can you Help?

1. Plot the graph of the equation 2x+4y=10 and 3x+6y=12 and interperet the result.