42+x=58+24 36-x=48-22 x+19=31 найди корень уравнений

Question

42+x=58+24 36-x=48-22 x+19=31 найди корень уравнений

Answer 1

1.
42 + x = 58 + 24;
42 + x = 82;
x = 40;
2.
36 - x = 48 - 22;
36 - x = 26;
x = 10;
3.
x + 19 = 31;
x = 12.

Answer 2

1 - x=41/21
2 - x=13/18
3 - x=12