How would i start to solve number 15? would i use distributive property?

Using the distributive property is the correct first step. is being multiplied by -1, so distributing gives




Now, using the associative property of addition, you get




Simplify the right hand side:



Add 5 and to both sides.



On the left side, use the associative property. On the right, commutativity and associativity:



Simplify.

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