Question

oblicz wartość wyrażeń 1 1/2 * (1-3/7)+1/3*[1+6:(-18)] b 2,6-1/4 :[2-(-1,75)] c [-2/3-(1,8);(-1 1/5)];(-1/27) PILNE !!!!!!!!!!!!

Answer 1

a)3/2*4/7+1/3*[1-1/3]=12/14+1/3*2/3=6/7+2/9=54/63+14/63=68/63=1i5/63

b)26/10-1/4:[2+1,75]=26/10-1/4:3i3/4=26/10-1/4:14/4=26/10-1/4*4/14=26/10-1/14=182/70-5/70=

177/70=2i37/70

c)[-20/30-18/10]:(-6/5):(-1/27)=[-20/30-54/30]:(-6/5)*(-27/1)=[-74/30]:162/5=-74/30*5/162=-37/486