Devaughn is 11 years older than Sydney. The sum of their ages is 53 . What is Sydney's age?

Sydney is 21 years old

Step-by-step explanation:

1. subtract 11 from 53 (53-11=42)

2. divide the difference by 2 (42/2=21)

x+11+x=53

2x+11=53

-11. -11

2x=42

x=21

Sydney is 21 years old

Devaughn is 32 years old

y=-2.5x+12.5

step-by-step explanation:

5y=2x+10

y=0.4x+2

slope=-2.5

5=-2.5*3+b

b=12.5

step by step explanation: when u removing the parentheses and combined them that would be : x+3y-x-y=2y