Why is salvation not a license to sin?

Salvation is often packaged in a way which appears as

A Divine Object that God gives to The Repentant.

Explanation:

The Truth of The Gospel is that we cannot "accidently" lose our salvation as we can lose our wallet or car keys." We can deliberately lose and trash our Salvation by unrepentant sin to the point of hardening our heart to GOD.

Satan knows the above Truth and he knows that if Christians follow this, They will bear fruit of love and peace and kindness and draw many to JESUS... well the devil cannot have this! He wants Christians to be lazy, complacent, full of hypocrisy and self righteousness and darkness.

Thus, Satan, The Father of All Lies, thought of a way to Distort The Gospel to turn Christians more sinful than Sodom and more wicked than Gommorrah. And he came up one of his sweetest of all lies.

when a country suffers, for example, a drought period, the market product is affected for a low offer, in this case, potatoes; the government has to tax to the households, which have to give more money for the potatoes which they consume, that situation make them consume substitute goods even through loans, it could increase the financial market movement and the inflationary phenomena, the business has to increase salaries in order to the employees could buy a more expensive food (potatoes) and in order to inflation tha business had to buy expensive supplies in the factor market, while the rest of the world have to gain more money to consume the same amount of potatoes.

the perimeter of a triangle is 69 cm. side a is 5 cm shorter than side b. side c is twice as long as side a. find the length of each side. i need to know how to do it in 2 equations.  

equations:

a = b-5

c = 2a

a + b + c = 69