Respuesta :

a+(−1.2)=−5.5

a−1.2=−5.5

a = -5.5 + 1.2

a = -4.3

a+(-1.2)=-5.5
a+(-1.2)-(-1.2)=-5.5-(-1.2)
a=-4.3

To verify substitute a=-4.3 into the equation.

a+(-1.2)=-5.5
-4.3+(-1.2)=-5.5
-5.5=-5.5