Question

.Formula1" title=" \frac{7}{10} + ( - \frac{4}{5) = " alt=" \frac{7}{10} + ( - \frac{4}{5) = " align="absmiddle" class="latex-formula">

Answer 1

7/10 - 4/5

get a common denominator of 10

7/10 - 4/5 *2/2

7/10 - 8/10

-1/10