Question

СРОЧНО ПОМОГИТЕ ПЛИЗ
1426 и еще это 2 ×-у-7=0
5х-3у-1=0​

Answer 1

$4x + 3 y- 5 = 0 \\ x - y - 3 = 0 \\ \\ 4x + 3(x - 3) - 5 = 0 \\ y = x - 3 \\ \\ 4x + 3(x - 3) - 5 = 0 \\ 4x + 3x - 9 - 5 = 0 \\ 7x = 14 \\ x = 14 \div 7 \\ x = 2 \\ \\ y = x - 3 \\ y = 2 - 3 \\ y = - 1 \\ \\ otvet \: (2 \: ; \: - 1)$

$2x - y - 7 = 0 \: | \times ( - 3) \\ 5x - 3y - 1 = 0 \\ \\ - 6x + 3y + 21 = 0 \\ 5x - 3y - 1 = 0 \\ \\ - x + 20 = 0 \\ - x = - 20 \\ x = 20 \\ \\ 2x - y - 7 = 0 \\ 2 \times 20 - y - 7 = 0 \\ 40 - y - 7 = 0 \\ 33 - y = 0 \\ y = 33 \\ \\ otvet \: (20 \: ; \: 33)$