exam Maths Puzzle Numerical Ability

Which ordered pair is a solution of : 5x-2y = 12

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exam Other Question

could you please solve this equation using the substitution method and indicate if it is independent, inconsistent or dependent.
Thank you.

x = 1/8y - 1
y = 1/4x + 39 Add. 19 + (-20) + 2 + (-19)