Simplify this expression. a8 × a7 =

The correct answer is a^15

I hope this helps. :)

Well 7 x 8 =56 and 56 + a = a56
so answer a56

1. isolate the variable, in this case, d. subtract 35.5 on both sides of the equation.2. 52 subtracted by 35.5 is 16.53. therefore your answer would be d= 16.5this is the basics of pre algebra, isolating variable through adding, subtracting, multiplying, and dividing, if you have any other questions to ask just comment!