Question

99+14-3x=149
79-3x+9x=189​

Answer 1

99+14-3х=149

99+14=113

113-3х=149

149-113=36

х=36:3

х=12

79-3х+9х=189

-3х+9х=189-79

6х=110

х=110:6

х=18,5