How do you evaluate $\frac { 1} { 2} + ( - \frac { 13} { 8} )$ ?

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Answer 1 · 2017-02-03T05:12:43

$1/2 + (-13/8)$ simplifies to $-9/8$ , or may be expressed as $-1 1/8$

Start by reducing the number of signs in the expression:

$1/2 + (-13/8) = 1/2 - 13/8$

Then find the LCD and convert all the terms to have the common denominator:

$1/2 -13/8 = 4/8 - 13/8$

Perform the addition or subtraction:

$(4 - 13)/8= -9/8$

$= -1 1/8$

How do you evaluate \frac { 1} { 2} + ( - \frac { 13} { 8} )\frac { 1} { 2} + ( - \frac { 13} { 8} )?