Question

2x - x + 3x + 5 = 25
Solve for X​

Answer 1

The value of the unknown (x) is equal to 5

Explanation:

To find the value of x, we follow these steps:

To solve an equation that is not simplified, what we have to do first is simplify it. We have to group all the similar terms, in this case, there is only one unknown, so we will have to simplify that:

`\rm (2x - x) + 3x + 5 = 25 \\ \rm (x + 3x) + 5 = 25 \\ \rm 4x + 5 = 25`

Now when a term is adding, we must go to the other side of the equality to subtract from the other equal term In this case, +5 is adding, so we must go to the other side of the equal to do the opposite: Subtract this to 25:

`\rm4x = 25 - 5 \\ \rm 4x = 20`

Continuing with the opposite operations, we see that 4 multiplies the unknown, so we must go to the other side of the equal to divide 20/4, as follows:

`\rm x = (20)/(4) \\ \boxed{ \: \: \: \: \: \: \rm x = 5 \: \: \: \: \: \: }`

So:

The value of the unknown (x) is equal to 5

Answer 2

• 
  `\bf x=5`

Explanation:

`\bf 2x - x + 3x + 5 = 25`

Combine like terms.

• 
  `\bf 4x+5=25`

Subtract 5 from both sides.

• 
  `\bf 4x+5-5=25-5`

• 
  `\bf 4x=20`

Divide both sides by 4.

• 
  `\bf \cfrac{4x}{4}=\cfrac{20}{4}`

• 
  `\bf x=5`

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