Solving implies you are talking about an equation. Equations must have equal marks in them somewhere. If you mean y + 12 = -8
then subtract 8 from both sides of the equation ( or if your teacher is really strict you will be told to add -12 to both sides of the equation, but the same thing happens)
y + 12 - 12 = -8 - 12, then on the left and right simplify to
y = -20
This is called the subtraction property of equality (if you subtract 12) or the addition property of equality (if you add -12)
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Subtraction property if x+12=24 the subtraction property lets us minus 12 from both sides to get x+12-12=24-12 the twelves on both sides cancel each other out by the way, to get x=12, your answer
12/3 = 4
The distributive property breaks down the equation to make it more simple to do. It is often used for mental math. An example is (12x56). (10x50=500)+(2x6=12) then, (500+12=512).
You multiply the outside number touching the parenthesis by the numbers inside. Ex: 6(x - 5) = 42 6x - 30 = 42 6x = 72 x = 12
You can solve distributive property problems, by doing this: Let's say your problem is 27+12. You start by doing this: What factor goes into 27? Wait... what Greatest Common Factor belongs to 27? It's 9. So, what you do is this: 3(9+?) 3*? equals 12? 3*4= 12. So it's 4. So, 3(9+4) 9+4= 13 3*13= 39 27 +12 equals 39