Respuesta :

mhanifa

Answer:

  • 11 and 19

Step-by-step explanation:

  • My age = m
  • Sister's age = s

Equations:

  • m + s = 30
  • s = 2m - 3

Substitute s into first equation and solve for m:

  • m + 2m - 3 = 30
  • 3m - 3 = 30
  • 3m = 33
  • m = 11

Find s:

  • s = 2*11 - 3 = 22 - 3 = 19
generalnimitz

Answer:

2x - 3 + x = 24  <--- the sum of their ages is 30

 

3x - 3 = 30

 

3x = 33

 

x = 11

Step-by-step explanation:

HIS AGE IS 11

AND HIS SISTERS AGE IS 19

PLEASEEE GIVE ME BRAINLIEST

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