Question

answer this question fast plz explain briefly​

Answer 1

Answer:

171/5

Step-by-step explanation:

2x +7 +3x+2=180

5x + 9 =180

5x = 171

x = 171 / 5

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Answer 2

2x+9+3x+2= 180

5x+11 = 180

5x= 180-11

5x= 169

x= 169/5 = 33.8

1st angle= 2*33.8+9 = 76.6°

2nd angle= 3*33.8+2=103.4°

3rd angle = 103.4° {Opposite angles r equal}

4th angle = 76.6° {Opposite angles r equal}

Verification: 76.6+ 103.4+103.4+76.6= 360°

Hence the answer is correct.