Please show me how to solve step by step two step equations with one variable

3x-4 =17

x = 7

Explanation:

3x - 4 = 17

First, we move 4 from the left side of the function to the right side. When we move the number to another side, we have to change to the opposite direction (for example: from minus to plus, from multiple to divide).

Here, when in the left side, in front of 4 is "minus", so when we move it to the right side, we replace "minus" with "plus"

=> 3x = 17 + 4

We will do the underlined function first, 17 + 4 = 21 and 3x = 17 + 4, based on transitivity: 3x = 21

We have 3x = 21 => x * 3 = 21

To calculate x, we have to move 3 from the left side to the right side. As aforementioned, we have to change to the opposite direction from "multiple" to "divide"

=>x = 21/ 3 = 7

So that x = 7

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