3 years ago

PLS HELP HELP HELP!!

Mathematics

1 answer:

zubka84 [21]3 years ago

7 0

Answer:

x = 6

Step-by-step explanation:

The sum of the 3 angles in a triangle = 180°

Sum the 3 angles and equate to 180

13x - 5 + 67 + 40 = 180

13x + 102 = 180 ( subtract 102 from both sides )

13x = 78 ( divide both sides by 13 )

x = 6

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