6,12,18,24,30,36,42,48,54
40.5
Trust me i did it and got it right!! if its wrong lmk and i can explain it for u
4a5+28+6b7-30
4a5+6b7-2<—- this is a to the power of 5 , b to the power of 7
(Is that 5a or a to the power of 5 )
20a+28+42b-30
20a+42b-2<—— this is 5a , 7b