solve these equationz

What are equationz? What are you supposed to be solving for?
 
shotalei said:
5x + 1=23
4y - 7=2y +3
3 (2+12) = 30
Are these three different exercises? Is something missing from the third line? (A variable? Instructions?

Please reply with clarification, including the instructions and a clear listing of the steps you have tried thus far.

Thank you.

Eliz.
 
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