The equations that are true are:
2 + 5 = 19 - 12
5 - 4 - 3 - 2 - 1 = 30 - 34 - 1
Here we have some equations, the equations are only true if we have the exact same number in both sides of the equation.
The first one is:
2 + 5 = 19 - 12
If we simplify both sides we get:
2 + 5 = 7
19 - 12 = 7
Then the equation becomes:
2 + 5 = 19 - 12
7 = 7
This is true.
The next equation is:
5 - 4 - 3 - 2 - 1 = 30 - 34 - 1
If we simplify both sides we get:
5 - (4 + 3 + 2 + 1) = 30 - 35
5 - 10 = 30 - 35
-5 = -5
This is true.
The last equation is:
2x + 5 - 4x = 3x - 2 - 5x + 16
Here we have a variable, so we need to solve this for x.
2x -4x + 5 = 3x - 5x + 16 - 2
-2x + 5 = -2x + 14
-2x + 5 + 2x = 14
5 = 14
This equation is false, because 5 is different than 14.
If you want to learn more about equations:
https://brainly.com/question/13763238
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