Question

Решите пожалуйста эти номера

Answer 1

$804)30 = - 5x - 30 \ 5x = - 30 - 30 \ 5x = - 60 \ x = - 12 \ 805)18 = - 2x - 18 \ 2x = - 18 - 18 \ 2x = - 36 \ x = - 18 \ 806)20 = 5x - 20 \ - 5x = - 40 \ x = 8 \ 807)2 = - 5x + 30 \ 5x = 30 - 2 \ 5x = 28 \ x = 5.6 \ 808)5 = 2x - 8 \ 2x = - 8 - 5 \ 2x = - 13 \ x = - 6.5 \ 809)3 = - 10x + 30 \ 10x = 30 - 3 \ 10x = 27 x = 2.7$