If 5 x 6 = 20 + y, what is the value of y?

5*6=20+y

30=20+y

30-20=20-20+y

10=y

Check answer by using substitution method

5*6=20+y

30=20+10

30=30

Answer is y=10

step-by-step explanation:

this is not a question

this is answer of 144 cubic meters