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a/b - c + d if a = 7/8, b= -7/16, c= 0.8 and d= 1/4 write your answer as a mixed number in simplest form? help me please

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To solve this expression, we need to substitute the given values of a, b, c, and d into the expression and simplify:

a/b - c + d = (7/8) / (-7/16) - 0.8 + 1/4

We can simplify the first term by dividing the numerator by the denominator and multiplying by the reciprocal:

(7/8) / (-7/16) = (7/8) * (-16/7) = -2

Substituting this value, along with the values of c and d, we get:

a/b - c + d = -2 - 0.8 + 1/4

Combining the constant terms, we get:

a/b - c + d = -2.8 + 1/4

To express this as a mixed number in simplest form, we first convert the decimal to a fraction by multiplying both the numerator and denominator by 100:

-2.8 + 1/4 = -280/100 + 25/100

Combining these fractions, we get:

-280/100 + 25/100 = -255/100

To express this as a mixed number, we divide the numerator by the denominator to get the whole number part, and express the remainder as a fraction of the denominator:

-255/100 = -2 55/100 = -2 11/20

Therefore, the answer in mixed number form is -2 11/20.
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