Answer:
y= 5x/6-4/3 y=x-5/2
Step-by-step explanation:
Step 2: <span>Inverse Property of Addition
</span><span>any number added to its opposite will equal zero
</span>in this case + 20 - 20 = 0
answer
Inverse Property of Addition
3x^2-18+5=47
3x^2 = 60
x^2 = 20
x = 4.472 , x = - 4.472