Question

Evaluate the expression when c=-7.6 and d=-8.2.2d-7c

Answer 1

You have the following expression:

`2d-7c`

where

c = -7.6

d = -8.2

reaplace the previous values into the given expression, and simplify, as follow:

`2(-8.2)-7(-7.6)=-16.4+53.2=36.8`

where it has been taken into account the law of signs.

Then, the anwe