решите уравнения: 1) 65+(х+23)=105 2) ( у-34)-10=32 3) (48-х)+35=82 4) 77-(28+у)=27

Найдем корешки.

1) 65 + (х + 23) = 105; 

65 + x + 23 = 105;

x + 88 = 105;

x = 105 - 88;

x = 17.

2) (у - 34) - 10 = 32; 

y - 34 - 10 = 32;

y - 44 = 32;

y = 44 + 32;

y = 76.

3) (48 - х) + 35 = 82; 

48 - x + 35 = 82;

-x + 83 = 82;

x = 83 - 82;

x = 1.

4) 77 - (28 + у) = 27; 

77 - 28 - y = 27; 

49 - y = 27; 

y = 49 - 27; 

y = 22.