2(x+7) + x=20
(2)(x) + (2)(7) + x=20 Distribute
2x+14 + x =20
(2x+x) + (14) =20 Combine Like Terms
3x+14=20
- 14 -14 Subtract 14 from both sides
3x = 6
3x/3 6/3 Divide Both Sides by 3
x = 2
Let me know if you still don't understand
Answer:
35
Step-by-step explanation:

Solving this ^^ would equal t=35.
Answer: y= 12x +40
Step-by-step explanation:
Answer:
XZ
Step-by-step explanation:
X and Z are points so that makes 2 endpoints, and a line segment
Answer:
z = 110
Step-by-step explanation:
z + 35 + 35 = 180
z+70=180
z = 110