100 points for answers and brainiest with and rating
select from the drop-down menus to correctly identify each property shown.
the options are:
commutative property
associative property
opposite of a sum property
a. −2.2+(−3.7+(−1.4))=(−2.2+(−3.7))+(− 1.4)
b. −7.2+(−1.7+(−2.3))=−7.2+(−2.3+(−1.7 ))
c. −3.5−4.2=−(3.5+4.2)
d. (−5.2+(−8.4))+(−2.8)=−5.2+(−8.4+(−2 .8)

Commutative property of addition:

a + b = b + a

Associative property of addition:

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

Opposite of a sum:

- a - b = - (a + b)

If we look at the options, A and D follow associative property.

B follows commutative property.

C follows opposite of a sum property.

37/3

step-by-step explanation:

step 1: simplify both sides of the equation.

7x+8(x+

1

4

)=3(6x−9)−8

7x+(8)(x)+(8)(

1

4

)=(3)(6x)+(3)(−9)+−8(distribute)

7x+8x+2=18x+−27+−8

(7x+8x)+(2)=(18x)+(−27+−8)(combine like terms)

15x+2=18x+−35

15x+2=18x−35

tep 2: subtract 18x from both sides.

15x+2−18x=18x−35−18x

−3x+2=−35

step 3: subtract 2 from both sides.

−3x+2−2=−35−2

−3x=−37

step 4: divide both sides by -3.

−3x

−3

=

−37

−3

x=

37

3