Need Help w/ 3 Questions. [MEDAL & FAN] (Questions Inside)

Question

yoloshroom · Answer

68 degrees for the first one :)
17x+16x+12x=180
45x=180
x=4
17(4)=68

anonymous · Answer

Ok thanks for adding the steps w/ the answer! What about the next one?

yoloshroom · Answer

(2x+7)/(3x-4)=11/2
Multiply both sides by the LCD : 2(3x-4) so you get..
4x+14=33-44
Move X to one side, so -33x+4x=-44-14
combine like terms.. -29x=-58
divide by 29... -x=-2
Multiply by negative 1 to make X positive... x=2

yoloshroom · Answer

lastly,
(6x+1)/7=(18x-2)/14
we can divide (18-2)/14 by 2 because all terms are divisible by two so (6x+1)/7=(9x-1)/7
mulitply both sides by 7 to remove the fractions. 6x+1=9x-1
move x to one side. 6x-9x=-1-1
combine like terms -3x=-2
divide by -3 x=-2/-3
x=-2/-3
negative/negative = positive so, x=2/3