2. 1/7 × (-10/9 ) +(-5/4) =
1. 2/3 : (-9/4) × 4
[tex] \frac{2}{3} \div ( - \frac{9}{4} ) \times 4[/tex]
[tex] = \frac{2}{3} \times ( - \frac{4}{9}) \times \frac{4}{1} [/tex]
[tex] = - ( \frac{2 \times 4}{3 \times 9} ) \times \frac{4}{1} [/tex]
[tex] = - \frac{8}{27} \times \frac{4}{1} [/tex]
[tex] = - \frac{8 \times 4}{27 \times 1} [/tex]
[tex] = - \frac{32}{27} [/tex]
[tex] = - 1 \frac{5}{27} [/tex]
.
2. 1/7 × (-10/9) + (-5/4)
[tex] \frac{1}{7} \times ( - \frac{10}{9} ) + ( - \frac{5}{4} )[/tex]
[tex] = - ( \frac{1 \times10}{7 \times 9} ) + ( - \frac{5}{4} )[/tex]
[tex] =( - \frac{10}{69}) + ( - \frac{5}{4} )[/tex]
[tex] = \frac{(( - 10) \times 4) + (63 \times ( - 5))}{63 \times 4} [/tex]
[tex] = \frac{( - 40) + ( - 315)}{252} [/tex]
[tex] = ( - \frac{355}{252} )[/tex]
[tex] = ( - 1 \frac{103}{252} )[/tex]
[answer.2.content]
