The sum of the angles in a triangle is always 180∘. Therefore, we can write the equation:
(6x−4)+(10x+1)+77=180
Step 3: Simplify the equation
Combine like terms:
6x−4+10x+1+77=18016x+74=180
Step 4: Solve for x
Subtract 74 from both sides:
16x=106
Divide by 16:
x=16106x=6.625
Final Answer
The value of x is approximately 6.625. However, since the given options are 5, 7, 26, and 51, none of these options are correct based on the calculation.