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The angle measure of a triangle is shown in the diagram.

what is the value of x?
A. 13
B. 20
C. 5
D. 12

The angle measure of a triangle is shown in the diagram. what is the value of x? A-example-1

1 Answer

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To find X it is a degree value.
All of the angles in this triangle add to give 180 degrees.

So set the sum of every angle = 180
180 = 95 + 3x+4 + 4X-3

To solve this you want x by itself so bring 95 to the other side by subtracting it. Add the 3x and 4X. Add 4 and -3.
85 = 7x + 1

Subtract the 1 to isolate x
84 = 7x

Divide by 7
X = 84/7

To see if it is A, B, C, D plug in the value and see if it adds up to 180
User Kishore Sampath
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