How to find the value of x in an equation
Asked by admin @ in Mathematics viewed by 393 People
Enter and solve an equation to find the value of x for the triangle. (hint: The sum of the angle measures in any triangle is 180°.)
Answered by admin @
The value of x is 35°.
Sum of angles in a triangle = 180°
Therefore, we will add to the values of the three angles together to get the value of x. This will be:
60° + 60° + (4x - 80°) = 180°
120° + 4x - 80° = 180°
Collect like terms
4x = 180° - 120° + 80°
4x = 140°
Divide both side by 4
4x/4 = 140°/4
x = 35°
In conclusion, the value of x is 35°.
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