Question

{-3в+2+а=0
1-4в+2а=0
решите систему уравнений

Answer 1

$- 3b + 2 + a = 0 \ 1 - 4b + 2a = 0 \ \ a - 3b = - 2 \ 2a - 4b = - 1 \ \ 2a - 6b = - 4 \ 2a - 4b = - 1 \ \ - 2b = - 3 \ a = - 2 + 3b \ \ b = 1.5 \ a = - 2 + 3 times 1.5 = 2.5$
Ответ: (2.5; 1.5)