Question

Help math questions.20 points solve for x
Please show work if possible.

Answer 1

1. x=9

2 x=9

3 x=10

4 x=7

Explanation:

1. 15+5x + 14x-6 = 180 supplementary angles

combine like terms

9 + 19x = 180

subtract 9 from each side

19 x = 171

divide by 19

19x/19 = 171 /19

x = 9

2. 13x-7 = 11x+11 corresponding angles are equal

subtract 11x from each side

2x -7 = 11

add 7 to each side

2x = 18

divide by 2

x =9

3. x+ 100 = 90 alternate interior angles are equal

subtract 100 from each side

x = -10

4. 17x+1 = 120 alternate exterior angles are equal

subtract 1 from each side

17x = 119

divide by 17 on each side

x = 119/17

x=7