Solve for X: 11.8 + (3/8)x + 6.4 = -(6/24)x - 1.5

Question

Solve for X:

11.8+38x+6.4=624x1.5 11.8+\frac{3}{8}x+6.4=-\frac{6}{24}x-1.5

Video Solution

Solution Steps

00:00 Find X
00:05 Collect like terms
00:20 Arrange the equation so that X is isolated on one side
00:53 Collect like terms
01:10 Multiply by 3 to get the common denominator (24)
01:26 Collect like terms
01:42 Simplify as much as possible
01:54 Isolate X by multiplying by the reciprocal
02:14 This is the solution to the problem

Step-by-Step Solution

To solve the given linear equation, we will follow these steps:

  • Simplify fractions in the equation.
  • Combine like terms on each side of the equation.
  • Move all terms involving x x to one side of the equation.
  • Move constant terms to the opposite side of the equation.
  • Isolate x x to find the solution.

Let's begin by simplifying the fractions and combining like terms:

The original equation is:
11.8+38x+6.4=624x1.5 11.8 + \frac{3}{8}x + 6.4 = -\frac{6}{24}x - 1.5

First, simplify 624-\frac{6}{24} as 14-\frac{1}{4}, because 624-\frac{6}{24} is equivalent to 14-\frac{1}{4}.

So, the equation becomes:
11.8+38x+6.4=14x1.5 11.8 + \frac{3}{8}x + 6.4 = -\frac{1}{4}x - 1.5

Combine the constant terms on the left side:
11.8+6.4=18.2 11.8 + 6.4 = 18.2

The equation now is:
18.2+38x=14x1.5 18.2 + \frac{3}{8}x = -\frac{1}{4}x - 1.5

To collect all x x terms on one side, add 14x\frac{1}{4}x to both sides:
18.2+38x+14x=1.5 18.2 + \frac{3}{8}x + \frac{1}{4}x = -1.5

Convert 14\frac{1}{4} to 28\frac{2}{8} so that both fractions have a common denominator:
38x+28x=58x \frac{3}{8}x + \frac{2}{8}x = \frac{5}{8}x

Substituting back, we have:
18.2+58x=1.5 18.2 + \frac{5}{8}x = -1.5

Subtract 18.2 from both sides to isolate the term with x x :
58x=1.518.2 \frac{5}{8}x = -1.5 - 18.2

Calculate the right side:
1.518.2=19.7 -1.5 - 18.2 = -19.7

So, the equation becomes:
58x=19.7 \frac{5}{8}x = -19.7

To solve for x x , multiply both sides by 85\frac{8}{5} (the reciprocal of 58\frac{5}{8}):
x=19.7×85 x = -19.7 \times \frac{8}{5}

Calculate 19.7×85-19.7 \times \frac{8}{5}:
x=19.7×1.6=31.52 x = -19.7 \times 1.6 = -31.52

Thus, the solution to the equation is x=31.52 x = -31.52 .

Answer

31.52 -31.52