Question

5: Line and Triangle Relationships

NEED HELP!!! Please explain!

Answer 1

1]
15+5x+(14x-6) = 180
19x+9 = 180
19x = 171
x = 9

2]
13x-7 = 11x+11
13x-11x = 11+7
2x = 18
x = 9

3]
90 = x+100
x+100 = 90
x = -10

4]
17x+1 = 120
17x = 119
x = 7

5]
8+14x+(6x+12) = 180
20x+20 = 180
20x = 160
x = 8

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