Răspuns:
1. a) 3intregi si (26-2)/90=3 intregi si 24/90=3 intregi si 4/15=(15x3+4)/15=49/15
b) = 0,625
c) (5,7-2,3+0,08):3=3,48:3=1,16
2. 7,2(3); |-7,23|; 7,2; -4,(6).
3. 0,4x-7/5=-2,44; 0,4x-1,4=-2,44; 0,4x=1,4-2,44; 0,4x=-1,04; x=-1,04/0,4;
x=-104/100x10/4=104/40=-2,6
4. [49/60x(-6/7)-43/10]x(-50)=(-7/10-43/10)x(-50)=-50/10x(-50)=250
