15 × ( к - 10 ) = 255 ( 1 234 + n ) + 2 140 = 52 741

Question

15 × ( к - 10 ) = 255

( 1 234 + n ) + 2 140 = 52 741

Answer 1

А)
15x(k-10)=255
k-10=255:15
k-10=161
k=161+10
k=171
15x(171-10)=255

б)
(1234+n)+2140=52741
1234+n=52741-2140
1234+n=50601
n=50601-1234
n=49367
(1234+49367)+2140=52741

Answer 2

1. к-10=255:15
к-10=17
к=17+10
к=27

2.(1234+n) +2140=52741
1234+n=52741-2140
1234+n=50601
n=50601-1234
n=49367