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12y+2=146 12y=146-2 12y=144 144/12 12x12=144 y=12
12y = 132y = 132/12y = 11
12y - 4 = 7y + 165y = 20y = 4
The equation is 12y - 9 = 21. To solve for y, you can start by adding 9 to both sides to isolate the term with y. This gives you 12y = 30. Next, divide both sides by 12 to solve for y, which gives y = 2.5.
5*3y+1+12y-1 = 15y+1+12y-1 = 27y.