Question

реши уравнение (349-х)+103=217

Answer 1

(349-х)+103=217
349-х+103=217
-х=217-349-217
-х=-349
х=349

Answer 2

(349 - x) + 103 = 217
349 - x = 217 - 103
349 - x = 114
x = 349 - 114
x = 235
__________
( 349 - 235) + 103 = 217
                       217 = 217