Question

a)3/5-1-2/5 b)4-1/10+2/5 c)1/2-(-3/5)+70/10 me ajudem pfvr tenho provão e n sei esta questão

Answer 1

$A) \frac{3}{5}-1 -\frac{2}{5}= \frac{3-5-2}{5}= -\frac{4}{5}$

$B)4- \frac{1}{10}+ \frac{2}{5} = \frac{200-5+20}{50}= \frac{215:5}{50:5}= \frac{43}{10}$

$C) \frac{1}{2}+ \frac{3}{5}+ \frac{70}{10}= \frac{50+60+700}{100} = \frac{810}{100}= \frac{81}{10}$