Question

найдите кони уравнений

Answer 1

1. 17х+18х=700
35х=700
х=20
3.39х+33х=432
72х=432
х=6
2.
$41y - 17y = 480 \\ 24y = 480 \\ y = 20$

4. 82z-57z=575
25z=575
z=23