Реши уровнения. 1) X+12,4=15,82 2) X-16,53=14,47 21,7+X=23,04 28,4-X=27,93

Найдем корни.

1) X + 12,4 = 15,82;

x = 15.82 - 12.4;

x = 3.82 - 0.4;

x = 3.42;

Ответ: х = 3,42.

2) X - 16,53 = 14,47;

x = 16.53 + 14.47;

x = 16.5 + 14.5;

x = 17 + 14;

x = 20 + 11;

x = 31.

3) 21,7 + X = 23,04;

x = 23.04 - 21.7;

x = 2.04 - 0.7;

x = 1.34.

4) 28,4 - X = 27,93;

-x = 27.93 - 28.4;

-x = 0.93 - 1.4;

x = 1.4 - 0.93;

x = 0.47.