Answer:
Explanation:
To solve this problem, we need to substitute the given value of 12 for the solution to the equation and then solve for the value of "a".
So, we start by writing the equation with the given value:
5x - 10 = 3x + a + 12
Next, we simplify the equation by combining like terms:
2x - 10 = a + 12
Then, we isolate "a" on one side of the equation by subtracting 12 from both sides:
2x - 22 = a
Therefore, the value of "a" that makes the solution to the equation 5x-10=3x+a equal to 12 is a = 2x - 22.