Answer:
x = 4
Step-by-step explanation:
<u>All triangles add up to 180 degrees</u>
76 + 17x + 9x = 180
76 + 17x + 9x - 76 = 180 - 76
26x / 26 = 104 / 26
x = 4
Answer:  x = 4
 
        
             
        
        
        
Answer:
7 9/10
Step-by-step explanation:
First, we need to add 4 2/3 and 5 2/5.
We should begin with converting the fractions into improper fractions.
4 2/3 + 5 2/5= 14/3 + 27/5
Now, we find the common denominator 
= 70/15 + 71/15
We can add:
= 141/15
And simplify. 
= 9 2/5
Finally, we subtract 1 1/2 from 9 2/5
Your answer is 7 9/10. Hope this helps!
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Answer:
x = 2, y = -1
Step-by-step explanation:
Now change the equation,
→ x + y = 1
→ y = 1 - x
Then the value of x will be,
→ 2x + y = 3
→ 2x + 1 - x = 3
→ x = 3 - 1
→ [ x = 2 ] 
Therefore, the value of x is 2. 
Now value of y will be,
→ y = 1 - x
→ y = 1 - 2
→ [ y = -1 ] 
Hence, the value of y is -1.