Реши уравнения.287+(120-x)=300

Question

Реши уравнения.287+(120-x)=300

Answer 1

287+120-х=300
407-х=300
-х=300-407
-х=-107
х=107

Answer 2

287+(120-х) = 300
287+120-х = 300
407-х = 300
х = 407-300
х = 107