Question

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Answer 1

1) correct

2) 63 deg

3) 3x - 1 + 90 + 31 = 180

3x + 120 = 180

3x = 60

x = 20

4) x = 34 + 21 = 55

5) 2x + 3 + 51 = 100

2x + 54 = 100

2x = 46

x = 23

6) 60 + 2x = 94

2x = 34

x = 17

7) 85

8) x + 2x + 3x = 180

6x = 180

x = 30

9) 2x - 2 + x + 5 = 90

3x + 3 = 90

3x = 87

x = 29

10) 147

11) 3x = 180

x = 60

12) x + 40 + 2x - 5 + 3x - 17 = 180

6x + 18 = 180

6x = 162

x = 27