-13.9+(-12.8) evaluate the answer

=-26.7

Step-by-step explanation:

=-13.9+(-12.8)

=-13.9-12.8

=-26.7

13.9+(−12.8)= 1.1

a

step-by-step explanation:

the answer is a

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!