-7/12+(+1/8)+(-5/1)+(+3/4)

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To add these fractions, we first need to find a common denominator. In this case, the common denominator would be 8, since it is divisible by 12, 8, 1, and 4.

-7/12 + 1/8 - 5/1 + 3/4
= (-72)/(122) + (13)/(83) + (-58)/(18) + (32)/(42)
= -14/24 + 3/24 - 40/8 + 6/8
= -14/24 + 3/24 - 40/8 + 6/8
= (-14 + 3 - 40 + 6)/24
= -45/24

Therefore, -7/12 + 1/8 - 5/1 + 3/4 = -45/24 which simplifies to -15/8.