84 divided into sevenths could either be:
84 x (1/7) or simply 84/7
In the end, the answer would be 12.
3x-10=x+4 is the equation...
Use
y-y1=m(x-x1)
y-(-2)=4(x-1) Now why 4??Because parallel lines have the exact same slope
y+2=4x-4
y=4x-4-2
y=4x-6
Hope it helps!

~Just a teen who listens to music
I only could find part of the triangle sorry, but u1 is 2 radical 2
The final answer should be -49/168.