Solve for X in (5+3x)/x = 3/4: Rational Equation Solution

Question

Solve for X:

5+3xx=34 \frac{5+3x}{x}=\frac{3}{4}

Video Solution

Solution Steps

00:00 Find X
00:03 Multiply by denominators to eliminate fractions
00:22 Simplify as much as possible
00:31 Carefully open parentheses properly, multiply by each factor
00:48 Arrange the equation so that one side has only the unknown X
01:06 Collect like terms
01:14 Isolate X
01:21 Simplify as much as possible
01:24 And this is the solution to the question

Step-by-Step Solution

Let's solve the equation 5+3xx=34\frac{5+3x}{x} = \frac{3}{4}.

  • Step 1: Begin by applying cross-multiplication to eliminate the fractions. This gives us:

(5+3x)4=3x(5 + 3x) \cdot 4 = 3 \cdot x
Simplifying, we get:
20+12x=3x20 + 12x = 3x

  • Step 2: Rearrange the equation to bring all terms involving xx to one side:

20+12x3x=020 + 12x - 3x = 0
Simplifying, we find:
20+9x=020 + 9x = 0

  • Step 3: Isolate xx by solving the equation:

9x=209x = -20
Divide both sides by 9 to solve for xx:
x=209x = -\frac{20}{9}

Therefore, the solution to the equation 5+3xx=34\frac{5+3x}{x} = \frac{3}{4} is x=209x = -\frac{20}{9}.

Answer

209 -\frac{20}{9}