Question 175508
First perform the arithmetic operations

so 7y-3=6y+12

Collect all"like terms" on the same of the equation by adding or subtracting the same quantity to each side of the equation

So

7y-6y=12+3

y=15

Check your answer by substituting y=15 back into the original equation

7*15-3=102

6*15+12=102  OK