Question

Решите систему уравнений 4x-3y=7 и 5x+2y=26

Answer 1

$displaystyle ttleft { {{4x-3y=7} atop {5x+2y=26}} right.\\\left { {{9x-y=33}  atop {5x+2y=26}} right. \\\left { {{y=9x-33} atop {5x+2cdot(9x-33)=26}} right.\\\5x+18x-66=26\23x=92\x=92:23\x=4 y=36-33=3$

Ответ: {4; 3}