памагите пожалуйста

1)2x+7>1               3)4x+9>-15           
   x-3=1                      2-x<5        
2x+7>1                      x=2+5=7
x=3+1=4                     4*(7)+9>-15
2*4+7>1                  36+9>-15
8+7>1                    45>-15
9>1                    
4-3=1