Question

Решите уравнения:(х+49)+71=145; (х+179)-178+; 276-(227-х)+51; 437-(х-83)=20

Answer 1

(x + 49) + 71 = 145
x + 49 = 74
x = 25
437 - (x - 83) = 20
x - 83 = 417
x = 500