Triangle sum is 3 coz triangles have 3 sides.... if that’s not right then I dunno.... there was no picture that went with this question
Answer:
Always true
Step-by-step explanation:
Given

Required
Determine its type of solution

Collect Like Terms

Take LCM


Multiply both sides by 



<em>Hence, the equation is always true for x = 3</em>
Go to Calvin. Edu hope this helps.
Answer:
2x, a linear pair
Step-by-step explanation:
2/5x/3/4 = 7/4 = 1 3/4