X + 3 * 21 = 12
x + 63 = 12
x = 12-63
x = -51
The wording was a little odd, but I hope this is what you’re looking for!
Answer:
Hence the correct option is the last one . The triangle is an obtuse angled triangle.
Step-by-step explanation:
i) the sum of any two sides added together is greater than the third side hence this is a triangle.
ii) it is<em><u> not</u></em> a right angled triangle as
and 
iii) the triangle is not acute from ii) above
iv) the triangle is an obtuse triangle from ii) above.
-3x from both sides so it looks like 2x=20 and divide by 2 and x=10
Answer:
(3 x X) + 2
Can be a possible way if you factor it out I think.
I would say 20% chance because there are 5 question and getting one right is 20%. I don't really know how to explain. Hope this is right!