Expression is equivalent to −4.6+(−0.4)+(−7.2)−4.6+(−0.4)+(−7.2 ) ?

we have

Possibility N 1

Possibility N 2

Possibility N 3

Possibility N 4

1. sometimes

2. never true

3. sometimes

step-by-step explanation:

these are pretty self explanatory if you know what supp right and com angles are