What is the value of x if e^3x+16=8

Question: what is the value of x 4x-2= (-7) +5x. it would be greatly appreciated if someone could actually explain to me step by step

What would be the reasons for lines 3 and 4? a. addition property; subtraction property b. addition property; solve c. substitution property; subtraction property d. substitution property; prove

George writes the mixed number as sum and uses the distributive property 1/2.-2/5=1/2-2+2/5=1/2