Answer:
The answer is 22.2
Step-by-step explanation:
the outer angles always equal 360, so all of those added together should equal 360, and when you sole the equation, you get 22.2
It helps to imagine the variable a sort of as a unit. Like with 5 minus 12 lemons, it has no bearings on the addition/subtraction here.
Factor out a and subtract.
1. Answer x=-5
You would subtract 25 from each side of the equal sign, taking 25 away from 40 and 25 away from 25, isolating the x. So you would then have -3x=15. You would then divide each side by -3, and getting x=-5