Solve and DONT simplify 9/18 + 1/3
2 answers:
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The first one can be done by Pythagoras theorem such as 
then 
then 
The second one can also done by Pythagoras theorem, note that this is isosceles triangle so
, again by using Pythagoras theorem 
then 
then 
For the last one can also done by property of 30-60-90 triangle.
The second one can also done by Pythagoras theorem, note that this is isosceles triangle so
For the last one can also done by property of 30-60-90 triangle.
Answer:
-6
Step-by-step explanation:
This is similar to collecting like terms in Algebra, that is
- 2x - 7x + 3x = x(- 2 - 7 + 3) = - 6x
Similarly
-2 - 7
+ 3
=(- 2 - 7 + 3) = - 6