Question

Indicate which property is illustrated in Step 7.

Step 1 7 + 12x - 7 - 6x + 3 = 7 + (12x - 7) - 6x + 3
Step 2 = 7 + (-7 + 12x) - 6x + 3
Step 3 = [7 + (-7)] + (12x - 6x) + 3
Step 4 = 0 + (12x - 6x) + 3
Step 5 = (12x - 6x) + 3
Step 6 = (12 - 6)x + 3
Step 7 = 6x + 3

additive identity
commutative
associative
arithmetic fact

Answer 1

thank you 4 my medal

Answer 2

I give medals to the asker when the asker answers his or her own question correctly :)
the action involved in this one is simply 12 - 6 = 6

Answer 3

so arithmetic fact right

Answer 4

yep :)

Answer 5

Yes!