what is the solution for a good nutrition
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Where is the challenge (or the fun) if you know what the solution is? The idea of Wasgij is to NOT know what the puzzle picture is beforehand, but enjoy the solution as it gradually unfolds.
the associative property of addition states that changing the grouping of the values in question will not change the solution. for example, (a+b)+c=a+(b+c) where the grouping of the addition changes but the solution does not. hope i helped and good luck.
If this value a satisfy the equation, then a is a solution for that equation. ( or we can say that for the value a the equation is true)
i dont know read the book
When you put the number in place of the variable (like maybe the 'x' or the 'y') wherever the variable occurs in the equation, and the statement you get out of all the numbers you have is not true, then you know the number is not a solution.