153. Решите систему уравнений первой степени с двумя неизвестными x+5y=9, |3у - 2x = -5; 1) 3) J2x-y=3, |2y +x=14; 3x+y+4= 0, |4y +8x-4 = 0; 2) 4) (2x-3y+8=0, 4x-2y+4=0. 158. 1 159.
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