Выполните действия: 1) 3a/4(b-1) - 8a/b-1; 2) 7y/6(x-2)+4y/5(x-2);

1) 3 * a/(4 * (b - 1)) - 8 * a/(b - 1) = 3 * a/(4 * (b - 1)) - 4 * 8 * a/(4 * (b - 1)) = (3 * а - 32 * а)/(4 * (b - 1)) = -29 * а/(4 * (b - 1));

2) 7 * y/(6 * (x - 2)) + 4 * y/(5 * (x - 2) = 5 * 7 * y/(30 * (x - 2)) + 6 * 4 * y/(30 * (x - 2) = 35 * y/(30 * (x - 2)) + 24 * y/(30 * (x - 2) = (35 * у + 24 * у)/(30 * (x - 2)) = 59 * у/(30 * (x - 2)).