Odpowiedź:
3 x + y = 2 y + 7
x - y = 2 x + y ⇒ x = - 2 y
------------------------
3*( - 2 y ) + y - 2 y = 7
- 6 y + y - 2 y = 7
- 7 y = 7 / :( - 7)
y = - 1
x = - 2*( - 1) = 2
wiec
a = 3 x + y = 3*2 - 1 = 6 - 1 = 5
b = x - y = 2 - ( - 1) = 3
Pole P = a*b = 5*3 = 15 [ j²]
==========================
Szczegółowe wyjaśnienie:
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Verified answer
Odpowiedź:
3 x + y = 2 y + 7
x - y = 2 x + y ⇒ x = - 2 y
------------------------
3*( - 2 y ) + y - 2 y = 7
- 6 y + y - 2 y = 7
- 7 y = 7 / :( - 7)
y = - 1
x = - 2*( - 1) = 2
wiec
a = 3 x + y = 3*2 - 1 = 6 - 1 = 5
b = x - y = 2 - ( - 1) = 3
Pole P = a*b = 5*3 = 15 [ j²]
==========================
Szczegółowe wyjaśnienie: