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You have to get the same common denominator, 9x2 is 18, so 7x2 is 14. 14/18-5/18 is 9/18. 9/9 is 1 and 18/9 is 2, so you are left with 1/2

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โˆ™ 2013-12-16 23:14:27
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Q: How do you Subtract and Simplify 7 over 9 minus 5 over 18?
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Related questions

How do you subtract and simplify 7 over 18 minus 5 over 18?

7/18 - 5/18 = 2/18 = 1/9


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How do you subtract and simplify 7over 9 Minus 5 over 18?

(7/9)-(5/18)(14/18)-(5/18)(14-5)/189/181/2 ◄Rule: (a/b)-(c/d) = (ad-bc)/(bd)(126-45)/16281 / 1621 / 2 ■


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There is no need to simplify this, it is only a sum. 21 + (10/2) - 18 = 8


How do you subtract and simplify 5 over 18 minus 7 over 24?

In order to subtract, the denominators must be the same. The easiest way is to multiply 18 and 24, which equals 432. You will also have to multiply the numerators. Think of it like this: 24*(5/18) and 28*(7/24). You are multiplying the fraction as a whole. So, 24*5=120 and 18*7=126 Now the fractions are 120/432 and 126/432. Subtract them, and you get -6/432. To simplify, find a common number that both the numerator and denominator can divide by. Let's try 6. -6/6 = -1, and 432/6 = 72. Your simplified fraction is -1/72.


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The common denominator is 72, so 5/18 = 20/72, and 7/24 = 21/72. Now you can subtract the numerators [20-21 = -1]. So the answer is -1/72.


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121/18 is already in its simplest form


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