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victus00 [196]
2 years ago
5

21x + 7 22x + 2 180

Mathematics
2 answers:
serious [3.7K]2 years ago
4 0

<u>Answer</u>:

x = 5

<u>Explanation</u>:

If the angle are parallel:

step 1:

21x + 7 = 22x + 2

21x - 22x = 2 -7

-x = -5

x = 5

finding upper angle, then when both lies on straight line equals to 180°

step 2:

180 = (180 - 22x - 2 ) + 21x + 7

180 = 180 - 2 + 7 - 22x + 21x

180 = -x  185

-5  =  -x

x = 5

schepotkina [342]2 years ago
3 0

Solution:

<u>Note that:</u>

  • 21x + 7 = 22x + 2 (Vertically opposite angles)

<u>Solve the equation to find the value of x.</u>

  • 21x + 7 = 22x + 2
  • => -2 + 7 = 22x - 21x
  • => 5 = x

The value of x is 5.

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