Question

a) -2/14 (/ inseamna supra) + 1/7=
b)2- 8/6 + 9/12=
c) 1 intreg si 4/5 - 17/6 =
d)1,5 + 1, (2) - 5/3 =
e) 25/8 + 9/4 -12/16 =
f) 2 intregi si 7/9 + 11/3 -13/2=
g) 0,25 + 0,(33) - 1 intreg si 1/12=

Ajuta ti ma va rogg ! Vreau rezolvarea completa cu simplificari si amplificari (unde trebuie) .. De preferat poza . Va roggggg !

Answer 1

a)-2/14+1/7=-2/14+1×2/2×7
-2/14+2/14= 0
b)2/1-8/6+9/12=2×12/12-8×2/12+9/12=24-16+9 totul pe 12=17/12
c)1intreg4/5-17/6=1×5+4totul pe5-17/6=9/5-17/6=9×6/6×5-17×5/6×5=54/30-85/30=31/30
d)1,5+1,(2)-5/3=15/10+1intreg si 2/9-5/3=15/10+11/9-5/3=9×15/10×9+11×10/9×10-5×30/30×3=135/30+110/90-150/90=135+110-150 totul pe 90=95/90=19/18
e)25/8+9/4-12/6=25×2/8×2+9×4/4×4-12/16=50+36-12 totul pe 16=74/16
f)2intregi si 7/9+11/3-13/2=25/9+11/3-13/2=25×2/9×2+6×11/6×3-13×9/9×2=50+66-117 totul pe 18= -1/18
g)0,25+0,(33)-1 intregsi 1/12=25/10+33/99-13/12=25×1188+360×33-990×13 totul pe 10×99×12=29700+11880-12870 totul pe 11880=28710/11880=2871/1188
Mai detaliat de atat nu stiu cum as putea. Sper ca ti-am fost de ajutor si ca ai inteles. BAFTA !!