Question

31x+21x+8=200 контрольная помогите

Answer 1

52х+8=200

52х=200-8

52х=192

х=192/52

х=48/13

Answer 2

31х + 21х + 8 = 200

51х = 200 - 8

51х = 192

х = 192/51

х = 3 39/51

х = 3 13/17