Answer :
So x is equal to 2/3, -20/3 for the equation |3 x+9|=11
Explanation
⇒ |3 x+9| = 11
For positive case
⇒ (3 x+9) = 11
⇒ 3x = 11 - 9
⇒ 3x = 2
⇒ x = 2/3
For negative case
⇒ -(3 x+9) = 11
⇒ -3x -9 = 11
⇒ -3x = 20
⇒ x = -20/3
How to solve an equation?
To solve linear equations, utilize the steps that are provided below.
- Remove parentheses from each side of the equation and combine similar terms to make it simpler.
- To separate the variable term on one side of the equation, use addition or subtraction.
- To find the variable, use division or multiplication.
- The common denominator can be multiplied by each side of the equation to eliminate fractions.
Lets take an example of solve z for 7z – (3z – 4) = 12
Here is no multiplication or division, so this will be easy to solve
⇒ 7z – (3z – 4) = 12
⇒ 7z – 3z + 4 = 12
⇒ 4z = 12 – 4
⇒ 4z = 8
⇒ z = 8/4
⇒ z = 2
See, that was so simple, using the mentioned methods, every linear equation can be solved easily.
Learn more about linear equations
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