1. Is the equation true, false or open? Explain.
8 + 4 = −5 + 7
I say false because 8 + 4 = 12
and -5 + 7 = 2 and 2 does not equal 12
I agree
You are correct. The equation 8 + 4 = −5 + 7 is false. As you mentioned, 8 + 4 equals 12, while −5 + 7 equals 2. Since 12 does not equal 2, the equation is false.
To determine if the equation is true, false, or open, we need to simplify both sides of the equation and compare the results. Let's break down each side of the equation:
Left side: 8 + 4 = 12
Right side: -5 + 7 = 2
Now, we compare the simplified results:
12 (left side) ≠ 2 (right side)
Since 12 and 2 are not equal, we can conclude that the equation is false.