"{x+y=49\n{-x+y=17\nрещить методом сложения\n"

x + y = 49 -x + y = 17

To solve these equations using the method of addition: Adding the two equations, we get: 2y = 66 y = 33

Substituting the value of y into the first equation: x + 33 = 49 x = 49 - 33 x = 16

Therefore, the solution to the equations is: x = 16 and y = 33.