Question

Решите уравнения
(х+240)*3=1260
х+(240*3)=1260
х+240=1260*3

Answer 1

1)3х+720=1260
   3х=1260-720
   3х=540
  х=180
2)х+720=1260
х=1260-720
х=540
3)х+240=3780
х=3780-240
х=3540