exam Maths Puzzle Numerical Ability

Solve each system by the addition method:

3/7x+5/9y=27

1/9x+2/7y=7

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exam Other Question

Can somebody help me with this problem please? Simplify complex rational expressions:
2 + 3
__ __ Can someone help me with this equation?

Jill budgets 1/5 of her yearly salary for clothing. Jills total clothing bill for the year is $8,000. What is her yearly salary?

Thanks in advance for your help!