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scoundrel [369]
3 years ago
12

-7/8 + (-1/2) = in simplest form

Mathematics
2 answers:
elixir [45]3 years ago
8 0
To begin to solve this problem, we must first note that when you are doing n + (-z), it is equal to n - z. Now, knowing this, we need to begin to find the LCD of 8 and 2. The LCD of 8 and 2 is 8, so now we need to turn -\frac{1}{2} into something over 8. -\frac{1}{2} becomes -\frac{4}{8}. Now, we can subtract the numerators over a common denominator. -7 - 4 is -11, so -\frac{7}{8} + (-\frac{1}{2}) is -\frac{11}{8}.
Vera_Pavlovna [14]3 years ago
6 0
Find a common denominator (in this case 8)

Multiply 4 to both numerator and denominator of -1/2

-1/2(4/4) = - 4/8

-7/8 - 4/8

Simplify. Combine terms

-7/8 - 4/8 = -11/8

Simplify. Change to mixed fraction

-11/8 = -8/8 - 3/8

-1 3/8 is your answer

hope this helps
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