exam Maths Puzzle Numerical Ability

solve by the substitution method
2x-y+2/2=22
3x+y+2/3=7




If anyone can answer the math problem I would deeply appreciate it very much. Please and Thank You

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exam Other Question

Write an exponential equation for each of the following , and use it to answer the problem.
a) Charlie invested $200 in a GIC which appreciates 8% each year,compounded annually.Ho
Find the domain of the rational function:
f(x) = (2x^2 - 4) / (3x^2 + 6x - 45)