18х+15х-3х=9000 185+11а-а=9755. 66в+99в+111=1761

Question

18х+15х-3х=9000 185+11а-а=9755. 66в+99в+111=1761

Answer 1

18х+15х-3х=9000
30х=9000
х=9000:30
х=300
185+11а-а=9755
10а=9755-185
10а=9570
а=9570:10
а=957
66в+99в+111=1761
165в=1761-111
165в=1650
в=1650:165
в=10

Comments

Спосибо ище