Solve for X: -3(x+1)+5x-4=-3+5(x-1) | Step-by-Step Guide

Question

Solve for x:

3(x+1)+5x4=3+5(x1) -3(x+1)+5x-4=-3+5(x-1)

Video Solution

Solution Steps

00:00 Find X
00:04 Open parentheses properly, multiply by each factor
00:29 Collect like terms
00:54 Arrange the equation so that X is isolated on one side
01:10 Collect like terms
01:16 Isolate X
01:24 And this is the solution to the problem

Step-by-Step Solution

First, we will expand the parentheses on both sides:

3x3+5x4=3+5x5 -3x-3+5x-4=-3+5x-5

Enter the like terms in both sections. Let's start with the left section:

3x+5x=2x -3x+5x=2x

34=7 -3-4=-7

Calculate the like terms on the right side:

35=8 -3-5=-8

Now, we obtain the equation:

2x7=8+5x 2x-7=-8+5x

To the right side we will move the members without the X, while to the left side we move those with the X, keeping the plus and minus signs as appropriate:

2x5x=8+7 2x-5x=-8+7

3x=1 -3x=-1

Finally, we divide both sides by -3:

13=3x3 \frac{-1}{-3}=\frac{-3x}{-3}

13=x \frac{1}{3}=x

Answer

13 \frac{1}{3}