If you arent any of thes people plz don't answer this question. hobie, kkmmll44, katyazamo. me with this question. and the other ones jakob is asked to simplify the expression –3a + 4b + 5a + (–7b). he writes: –3a + 4b + 5a + (–7b) = –3a + 5a + 4b + (–7b). which property allows him to do this? the associative property the commutative property the distributive property

The Associative Property say that it doesn't matter how we group the numbers (i.e. which we calculate first) when we add

(a + b) + c = a + (b + c)

The Commutative Property say we can swap numbers over and still get the same answer when we add

a + b = b + a

The Distributive Property:

a(b + c) = ab + ac

-3a + 4b + 5a + (-7b) = -3a + 5a + 4b + (-7b)

x=2 & x=1

step-by-step explanation:

7*1=7

7*2=14

7 is less than 21

14 is less than 21

x=30

step-by-step explanation: