" 0.83 " MEANS " 83/100 ". They are identical quantities, because they are the SAME quantity.
Answer:
7x^2-20
Step-by-step explanation:
First, distribute the negative sign and get -y + 7 = 14
then subtract 7 from both sides and get -y = 7
Divide both sides by -1 and get y = -7
Hope this helps :)