X-374=546 678+X=814 432-X=396

Question

X-374=546 678+X=814 432-X=396

Answer 1

Х-374=546
×=374+546
×=920
920-374=546

678+х=814
×=814-678
×=136
678+136=814

432-×=396
×=432-396
×=36
432-36=396