this problem is not written clearly. be sure that the problem answered here is the same as yours.
2 * 5x = -2
(2 * 5)x = -2
10x = -2
x = (-2 / 10)
-.02 = (-2 / 10)
x = -.02
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4 times 4 does not equal 20, it equals 16. 5 times 6 equals 30.
1 times 425 and 5 times 85 equal 425.
5/5 equals one; the denominator decides how many equal pieces of the whole will constitute the whole. The answer is 2 1/2. 2 1/2 equals 2.5, and 2/5 equals .4. 2 1/2 times 2/5 equals 1. Or, 2.5 times .4 equals 1. Another way to look at it is this. The numerator of 2/5 is 2. What do I have to multiply the fraction 2/5 by in order to make the numerator equal to 5? The answer is 2.5; 2.5 times 2 equals 5. Another way: a fraction times its reciprocal equals 1. 2/5 has the reciprocal 5/2. [5/2 equals 2 and 1/2]. 2/5 times 5/2 equals 10/10, which equals 1.
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4 times what equal 1750