Question

4/3+3/x+5=21/3x+15

Answer 1

First, get the x's on one side and the constants on another:
(3/x)*-(21/3x)=15-5-(4/3)
Next, find a common denominator for each side:
(3/x)*(3/3)-(21/3x))=15*(15/15)-5*(15/15)-(4/3)*(5/5)
=(9/3x)-(21/3x)=(225/15)-(75/15)-(20/15)
Next, do addition and subtraction
(-12/3x)=(130/15)
Simplify each side
(-4/x)=(26/3)
Multiply x to one side and divide by the constant
-4=x(26/3)
-4*(3/26)=x (when a fraction is divided or multiplied to another side, it is flipped)
x= -12/26 or -6/13

Answer 2

my options are 8 -8 2 or -2 thts it

Answer 3

(4/3)+ (3/(x+5)) = 21/(3x+15)
thats
(4(x+5) + 3(3))/3(x+5) = (21/(3x+15))
well that is
(4x + 20 + 9)/3x + 15 = 21/(3x + 15)
well wecross multiply
(3x + 15)(4X + 20 + 9) = 21(3X +15)
DIVIDE BOTH SIDES BY (3X + 15)
WE HAVE
4X + 29 = 21
4X = 21 - 29
4X = -8
X = -2