exam Maths Puzzle Numerical Ability

i would like to know how to sovle a equation 3y-2(y-1)/=-1 can u show me the processes to get the correct answer.

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exam Other Question

I have to do a really big project and I got stuck doing this. I do not know what is means. What is an algebraic expression using equations and inequalities? Will you give me examples of each. can you help me with this graphing problem

5x+4y=7
x-3y=9