Question

please explain me 45 - 45- 90 theorem​

Answer 1

Answer:

-90

Step-by-step explanation:

-45-90

+ × + = +  

- × - = +

+ × - = -

- × + = -

∴ -45-90=-135

remember that always greater number symbol will come.

∴45-135=-90

                           

Answer 2

45 - 45 - 90

-45 & +45 get cancels out

-90