Question

2 1/14 - 1 2/3 X равно 521

Answer 1

2 1/14 - 1 2/3 х=521
1 2/3 х=521 - 2 1/14
1 2/3 х=518 13/14
х=518 13/14 : 1 2/3
х=7265/14 * 3/5
х=4359/14=311 5/14