Determine the value of x

x = 13

Step-by-step explanation:

Add 3x and 4x - 1 together to get 7x-1.  Since the angle on the bottom right is 90 degrees, we can safely assume that the remaining angles add up to 90 degrees.  Add 1 on both sides to get 7x = 91.  Divide 7 on both sides to get 13 as your x value.

To plug in the x value, plug 13 in.  The one on the bottom left should equal to 39 degrees and the one on the top right should equal to 51 degrees.

answer: was that a question or answer?

step-by-step explanation:

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