simplyfy -11/3 + 7/18 + 7/(-9)+(-2 1/8) ?

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Solution

To simplify this expression take LCM of denominator

In denominator we have 3,18,9,8

LCM of (3,8,9,18) = 72

Now -11/3 = -2411/243 = -264/72

-11/3 = -264/72

7/18 = 74/184 = 28/72

7/(-9) = -7/9 = -78/98 = -56/72

-21/8 = -219/89 = -189/72

Now we have

-11/3+7/18+7/(-9)+(-21/8)

= -264/72 + 28/72 - 56/72 - 189/72

= (-264+28-56-189)/72

= -481/72

= -6.7

Answer : -481/72 or -6.7

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