Solve for X: Finding X in 1/4x + 0.3 - 0.1 = 3/4x - 0.8

Question

Solve for X:

14x+0.30.1=34x0.8 \frac{1}{4}x+0.3-0.1=\frac{3}{4}x-0.8

Video Solution

Solution Steps

00:00 Find X
00:05 Collect terms
00:12 Arrange the equation so that only the unknown X is on one side
00:32 Collect terms
00:36 Isolate X by multiplying by the reciprocal fraction
00:45 Divide 4 by 2
00:50 And this is the solution to the problem

Step-by-Step Solution

To solve this linear equation, we follow these steps:

  • Step 1: Simplify both sides of the equation by combining constants.
  • Step 2: Move terms with x x to one side of the equation and constants to the other.
  • Step 3: Solve for x x by isolating it.

Let's proceed:

First, simplify the left side of the equation by combining the constants 0.3 0.3 and 0.1 -0.1 :

14x+0.30.1=14x+0.2 \frac{1}{4}x + 0.3 - 0.1 = \frac{1}{4}x + 0.2

So the equation becomes:

14x+0.2=34x0.8 \frac{1}{4}x + 0.2 = \frac{3}{4}x - 0.8

Next, we move the terms involving x x to one side. Subtract 14x\frac{1}{4}x from both sides:

0.2=34x14x0.8 0.2 = \frac{3}{4}x - \frac{1}{4}x - 0.8

This simplifies to:

0.2=24x0.8 0.2 = \frac{2}{4}x - 0.8

which simplifies further to:

0.2=12x0.8 0.2 = \frac{1}{2}x - 0.8

Now, isolate 12x\frac{1}{2}x by adding 0.80.8 to both sides:

0.2+0.8=12x 0.2 + 0.8 = \frac{1}{2}x

This gives:

1.0=12x 1.0 = \frac{1}{2}x

To solve for x x , multiply both sides by 2:

x=2×1.0 x = 2 \times 1.0

Therefore,

x=2 x = 2

Hence, the correct answer is x=2 x = 2 .

Answer

2 2