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)