Найдите корни уровней 1) 17х +18х=700 2) 41у-17у=480 3)39х+33х=432 4) 82z-57z=575

1) 17x + 18x = 700
35x = 700
x = 20

2) 41y - 17y = 480
24y = 480
y = 20

3) 39x + 33x = 432
72x = 432
x = 6

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