Question

calcule as adiçao e subtraçao e simplique se for possivel;
{+1/5}-{3+/2}
{-12/3}-{4/9}
{-1/6]+7/4}
{-2/3}+{5/4}

Answer 1

a_5/10-15/10=-10/10=  -1
b_-36/9-4/9= -40/9
c_-2/12+21/12= 19/12
d_-8/12 + 15/12= - 7/12