Solve for X: -7/8x + 1/7 - 1/3 = 2/3 + 5/8x - 1/4x Linear Equation

Question

Solve for X:

78x+1713=23+58x14x -\frac{7}{8}x+\frac{1}{7}-\frac{1}{3}=\frac{2}{3}+\frac{5}{8}x-\frac{1}{4}x

Video Solution

Solution Steps

00:00 Find X
00:03 Arrange the equation so that X is isolated on one side
00:31 Simplify what possible
00:42 Combine like terms
00:55 Continue arranging the equation
01:10 Factor 12 into factors 4 and 3, factor 8 into factors 4 and 2
01:28 Combine like terms
01:32 Simplify what possible
01:47 Find the common denominator
02:03 Isolate X by multiplying by the reciprocal
02:14 Make sure to multiply numerator with numerator and denominator with denominator
02:19 And this is the solution to the problem

Step-by-Step Solution

Let's proceed with solving the equation step-by-step:

Given Equation: 78x+1713=23+58x14x-\frac{7}{8}x + \frac{1}{7} - \frac{1}{3} = \frac{2}{3} + \frac{5}{8}x - \frac{1}{4}x.

Step 1: Combine like terms on the right side of the equation.
On the right: 58x14x=58x28x=38x\frac{5}{8}x - \frac{1}{4}x = \frac{5}{8}x - \frac{2}{8}x = \frac{3}{8}x.

Therefore, the equation becomes:
78x+1713=23+38x-\frac{7}{8}x + \frac{1}{7} - \frac{1}{3} = \frac{2}{3} + \frac{3}{8}x.

Step 2: Move all the terms involving xx to one side and constant terms to the other side:
78x38x=2317+13-\frac{7}{8}x - \frac{3}{8}x = \frac{2}{3} - \frac{1}{7} + \frac{1}{3}.

Combine the terms involving xx:
108x=2317+13-\frac{10}{8}x = \frac{2}{3} - \frac{1}{7} + \frac{1}{3}.

Step 3: Simplify constants on the right side:
Combine constants on the right: 23+13=1\frac{2}{3} + \frac{1}{3} = 1
Thus, 117=7717=671 - \frac{1}{7} = \frac{7}{7} - \frac{1}{7} = \frac{6}{7}.

Now the equation is:
108x=67-\frac{10}{8}x = \frac{6}{7}.

Step 4: Simplify the coefficient of xx:
108=54-\frac{10}{8} = -\frac{5}{4}.
So the equation simplifies to:
54x=67-\frac{5}{4}x = \frac{6}{7}.

Step 5: Solve for xx by multiplying both sides by the reciprocal of 54-\frac{5}{4}:
x=67×(45)x = \frac{6}{7} \times \left(-\frac{4}{5}\right).

Step 6: Calculate the value of xx:
x=2435x = -\frac{24}{35}.

Therefore, the solution to the equation is x=2435x = -\frac{24}{35}.

Given the provided choices, the correct answer is choice 4: 2435 -\frac{24}{35} .

Answer

2435 -\frac{24}{35}