exam Maths Puzzle Numerical Ability

Find four solutions for the equation 3x + 5y = 15.
No book. Thank you very much for your time!!

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exam Other Question

solve the inequality:

3-3(b-2)<13-3(b-6)
this is from a work sheet. I need to know how to work this problem.

3x/4 + 1 = 10

Thanks