It only took 4 minutes to solve 3 questions that just took me 1 hour to figure out and failed. This video just saved another hour of struggle. Big like to this vid.
like fr tysm you can’t imagine how much your video helped me it really means alot for me im doing an entrance exam tomorrow for grade 10 so ican skip grade 9 wish i pass their exam so ican be same class with my friends
Hello! If both angles in the interior are not on the same line as the exterior, then you can use the exterior angle theorem from the video. So the equation would be 24 + 2x + 18 = 3x + 6. Then you can solve for x
Apologies for the late response! “Plug in” means “substitute”. In problem 2, in order to find the value of the exterior angle 3x+5, we have to “plug in” / “substitute” for x. If you substitute x=20 into 3x+5, you get 3(20)+5 which equals 65. So the exterior angle is 65 degrees
2x+10+3x+5=60 by Exterior Angle Theorem 2x+3x+10+5= 60 Commutative Property of Addition 5x+15=60 addition of like terms 5x+15-15=60-15 additive inverse (added negative 15 to both sides.) 5x=45 simplified by subtraction x=9 multiplicative inverse (multiplied both sides by 1/5) Substitute 9 into the givens to determined the angle measures; 28 and 32 degrees respectively. Cheerful Calculations! 🧮
Hello! I don’t quite understand your question. Where was the subtraction? The only subtraction I did was to simplify the first equation. 45 - 5 = 40 and 3x - x = 2x
