Answer:
Step-by-step explanation:
You'd solve this by creating the equation
20 + 6x - 1 + x + 14 = 180
33 + 7x = 180
- 33
7x = 147
÷ 7
x = 21
(because angles in a triangle add up to 180°)
And then you'd substitute in the value of x, so
6 × 21 = 126
126 - 1 = 125° = Angle A
21 + 14 = 35° = Angle C
I hope this helps!
3x+8=15
move +8 to the other side
sign changes from +8 to -8
3x+8-8= 15-8
3x= 15-8
3x= 7
divide both sides by 3 to get x by itself
3x/3= 7/3
answer:
7/3 or 2 1/3
