Question

YEAR 8 ALGEBRA PLS HELP>

Answer 1

the oldest is 16 and the other sibling Travis =8

Explanation:

x+y=24

x-y=8 ⇒ x=8+y

solve by substitute

8+y+y=24

2y=24-8

2y=16

y=16/2=8

x=8+y

x=8+8=16

x=16

y=8

Answer 2

Nikki is 16, Travis is 8

Explanation:

We need to set up an equation

If x is Nikki's age, then Travis' would x-8 since Nikki is 8 years older.

x+(x-8)=24

2x-8=24

2x=32

x=16

Nikki is 16, Travis is 8