Answer:
X = 5
Step-by-step explanation:
You always do the inverse (opposite). 20 - 15 = 5, therefore the variable 'X' = 5. Also, if you add '6' to 'X', then it shall be ONE greater than 20.
any real number greater than 5
X+15> 20
X>20-15
X>5
(5,∞)
you can easily know by ;- 6+15>20
21>20 it's true
