Vă rog mult, am nevoie mâine!

Răspuns:
Explicație pas cu pas:
(4-11/3)^9:(4-35/9)$=[(12-11)/3]^9:[(36-35)/9]^4=(1/3)^9:(1/3)^8=(1/3)
1,1(6)=(116-11)/90=105/90=21/18=7/6
4+8+12+...+8036=4(1+2+3...+2009)=4·2009·2010/2=2·2009·2010
7+14+21+...+14063=7(1+2+3+.....+2009)
Fractia=1/3²·6x/7/6=4/7 2x/3:7/6=4/7 4x/7=4/7
x=1