Question

Resuelve:
41x+23y=229 23x+41y=219
Determine:x+y​

Answer 1

41x + 23y = 229 (x41)

23x + 41y = 219 (x-23)

1681x + 943y = 9389

-529x - 943y = -5037

Se simplifica "y"

1152x = 4352

x = 4352/1152 = 544/119

x = 3.7

41x + 23y = 229

41(3.7) + 23y = 229

151.7 + 23y = 229

23y = 78.3

y = 78.3/23

y = 3.4

x + y = 3.7 + 3.4 = 7.1