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Solve 3x - 4 = 9

How to solve 3x - 4 = 9? Get the answer and stepwise instruction to solve linear equation in one one variable 𝒙.

Steps for finding the solution

We have 3x - 4 = 9

First, we move the non x terms to the RHS of the equation. To do this, we add 4 to both sides.

Note: if a = b, then a + c = b + c

Therefore, 3x - 4 + 4 = 9 + 4

or, 3x = 13

Next, divide both sides by 3, which is the coefficent of x

Note: if a = b, then a ÷ c = b ÷ c

3x/3 = 13/3

x = 13/3 or, x = 4.33

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𝒙 =

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