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;