Question

c) (+7,42).(-3,7 ) =
d) (-84,8): (-2,2 ) + ( - 75,3 ) =​

Answer 1

c

$( + 7.42) \times ( - 3.7) \\ - (7.42 \times 3.7) \\ - 27.454$

d

$( - 84.8) \div ( - 2.2) + ( - 75.3) \\ ( - \frac{424}{5} ) + ( - \frac{11}{5} ) - 75.3 \\ \frac{424}{5} \times \frac{5}{11} - \frac{753}{10}$

$424 \times \frac{1}{11} - \frac{753}{10} \\ \frac{424}{11} - \frac{753}{10} \\ - \frac{4043}{110}$