Answer:
Explanation:
You are looking for 1/2 of an unknown number minus 19. It will equal -13.
1/2x - 19 = -13
Get x isolated, so add 19 on left to cancel, then add on right) +19 +19
And you now are down to 1/2 x = 6
Now, let's simplify the fraction (1/2). Since it is 1 divided by 2, you reverse division with multiplication. Multiply 1/2 by the denominator (2) and you get 1. So, you're down to 1x, or just x. Then multiply the number on the other side of the equal sign (the 6) by 2 and you get 12.
So x = 12.
Now, let's go back to our original equation and plug in the x and see if it works.
1/2x - 19 = -13
becomes 1/2 (12) - 19 = -13
becomes 6 - 19 = -13
Voila! Our missing number (x) is 12.