exam Maths Puzzle Numerical Ability

please help me to solve this problem
1/2+27+y+12

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exam Other Question

Insert parenthesis to make this statement true. 3/3+3x3=1 I need a lot of help with theses problems. Your help will be greatly appreciated, thank you!

A. 3x - 6y = 12

B. 2x - y = -4

These two are the problems that I need help with, thank you a lot.