2(11x-5)-17x=55 5(8x+3)-12=83

1) 2(11x - 5) - 17x = 55;

2 * 11x + 2 * (- 5) - 17x = 55;

22x - 10 - 17x = 55;

5x - 10 = 55;

5x = 55 + 10;

5x = 65;

x = 65 : 5;

x = 13.

Ответ. 13.

2) 5(8x + 3) - 12 = 83;

5 * 8x + 5 * 3 - 12 = 83;

40x + 15 - 12 = 83;

40x + 3 = 83;

40x = 83 - 3;

40x = 80;

x = 80 : 40;

x = 2.

Ответ. 2.