решите уравнения 1) 52/63-x/63=29/72 2) (29/42-a) - 13/42=11/42 3) 15/17 - (b-3/17) = 6/17 4) 29/43 - (m+13/43) = 5/43

Вычислим корни уравнений.

1) 52/63 - x/63 = 29/72;

Приведем к общему знаменателю.

(52 - x) / 63 = 29/72;

(52 - x) / 7 = 29/8;

Умножим крест на крест.

8 * (52 - x) = 7 * 29;

52 - x = 7 * 29/8;

52 - x = 25.375;

x = 52 - 25.375;

x = 26.625.

2) (29/42 - a) - 13/42 = 11/42;

Раскроем скобки.

29/42 - a - 13/42 = 11/42;

16/42 - a = 11/42;

a = 16/42 - 11/42;

a = 5/42;

3) 15/17 - (b - 3/17) = 6/17;

15/17 - b + 3/17 = 6/17;

18/17 - b = 6/17;

b = 18/17 - 6/17;

b = 12/17;

4) 29/43 - (m + 13/43) = 5/43;

29/43 - m - 13/43 = 5/43;

16/43 - m = 5/43;

m = 16/43 - 5/43;

m = 11/43.