Question

Помогите с 51 номером)))

Answer 1

237-37+118=318
526-326+439=639
729-129-513=87
637-337-256=44

Answer 2

1) ( 237-37 ) + 118 = 200+118= 318
2) ( 526-326 ) + 439 = 200+439=639
3) ( 729 - 129 ) - 513 = 600-513=87
4) ( 637-337) - 256 = 300-256= 44