Luara is 5 years older than his sister elisabeth. she figured out that in 4 years she will be two times older than elisabeth. how old are they now?

Laura's age is years old

Elisabeth's age is year old

Step-by-step explanation:

Let

x-----> Laura's age

y----> Elisabeth's age

we know that

-----> equation A

-----> equation B

substitute equation A in equation B and solve for y

find x

----->

7! = 7×6×5×4×3×2

3! = 3× 2

as 7! is multiple of 3! because 7! contains 3! that is 3× 2 as factor

so 7! /(3! ) = 7× 6× 5× 4

= 42 × 20

= 840

its b) 840✌✌✌

dhruv⭐

b i think

step-by-step explanation:

not really sure