-1.5x-3.1<5.5
Multiply both sides by -1 (reverse the Inequality)
1.5x+3.1>-5.5
Multiply both sides by 10
1.5x x 10+3.1 x 10>-5.5 x 10
Refine
1.5x x 10+3.1 x 10>-5.5 x 10
Subtract 31 from both sides
15x+31-31>-55-31
Simplify
15x>-86
Divide Both sides by 15
15x/15 > -86/15
Simplify
X>- 86/15