Q1.

Add -20 to both sides of the equation.

Simplify

Q2.

Add -10 to both sides of the equation.


Q3.

Add -7.2 to both sides of the equation.


Q4.

Add -5.3 to both sides to get,

Simplify:

Q5.

Add 25 to both sides,


Q6.

Add 1.6 to both sides of the equation;

