Juan used algebraic properties to make an equivalent expression. He listed properties in the order that he used them.

15+7n-8+3n
=7n+3n+15-8
=(7+3)n+15-8
=10n+7

12n+2 (4n+2)
= 12n+8n+4
=(12n+8)n+9
=20n+9

15n+(7n+9)
=(15n+7n)+9
=(15+7)n+9
=22n+9

12n+6+7n
=(12n+7n)+6
=(12n+7)n+6
=19n+6

step-by-step explanation:

first, eliminate the parenthesis:

3

x

+

2

−

4

x

second, group like terms:

3

x

−

4

x

+

2

third, combine like terms:

(

3

−

4

)

x

+

2

→

−

1

x

+

2

→

−

x

+

2

(x, y)→(x − 8, y − 7)

step-by-step explanation:

enjoy!

16 is the absolute value

step-by-step explanation:

16 would be your answer