Asked by math suck

the following steps are used to rewrite the polynomial expression 3(x+4y)+5(2x-y)

step 1: (3x+12y)+(10x-5y)
step 2: (3x+12y)+(-5y+10x)
step 3: 3x+(12y-5y)+10x
step 4: 3x+10x+(12y-5y)
step 5: 13x+7y

identify the property used in each of the steps:

step 1

step 2

step 3

step 4
Answered by math suck
why
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