Answer:
-1
Explanation:
Let the number be x.
Then the equation will be:
3(x+18) = 51
=> 3x + 54 = 51
=> 3x = 51 - 54
=> 3x = -3
=> x = -3/3
=> x = -1
So, the number you thought of is -1.
The number is 3.
Step-by-step explanation:
In figure:
∠PRT+∠RTP+∠TPR=180
O
(angle sum property of triangle)
⇒x+(180
−∠RTQ)+60
=180
(linear pair)
−97
0
)+60
o
⇒x=31
Now, ∠PRT+∠TRQ+∠QRS=180
(angle of straight line)
⇒x+48
+y=180
⇒31
+48
⇒y=101
6900%
