arc20205
arc20205 arc20205
  • 10-05-2021
  • Mathematics
contestada

3a-2b=14. 3a+2b=28
..​

3a2b14 3a2b28 class=

Respuesta :

clarch19
clarch19 clarch19
  • 11-05-2021

Answer:

a = 7

b = 3 1/2

Step-by-step explanation:

if you add the equations together then the 'b' will zero out

6a = 42

a = 7

substitute 7 for 'a' to solve for 'b'

3(7) - 2b = 14

21 - 2b = 14

-2b = -7

b = 7/2 or 3 1/2

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