Answer: In khan academy, the answer is Replace one equation with sum/difference of both equations.
1/2 in decimal form is 0.5
0/2 is equal to 0 because the numerator has a 0.
2/2 is equal to 1, because the numerator matches the denominator.
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-160%, 2.5, 325%, 4
In order to make a percentage you take the decimal and move it twice (i.e .97 = 97%) so that would mean that 325% as a number instead of a percentage would be 3.25 and the same for -160% (-1.6).
