(1.35*10^88)+(7.98*10^87)

Question

I need the answer+steps how to do it

Answer 1

1.35 x 10⁸⁸ = 13.5 x 10⁸⁷

13.5 x 10⁸⁷ + 7.98 x 10⁸⁷ = 21.48 x 10⁸⁷

21.48 x 10⁸⁷ = 2.148 x 10⁸⁸

Answer 2

Hi Lisa,

 

Try to find a common factor. 10^87 looks like it will work.

Below I factorize the expression using 10^87 as a common factor.

=10^87*(1.35*10^1+7.98)

=10^87*(13.5+7.98)

= 10^87*21.48

= 21.48*10^87