h)(1/3+25/100)× /7+5/7(numa 7+5 suppra 7)=
(1/3+1/4)×12/7=
/4+3/12(numa 4+3 supra)12 ×12/7=
7/12×12/7= 1.(am ampl;12 cu 12 si 7 cu 7) raspunsul e 1.
i) 2/3÷(5/10+5/10×1/3)=
2/3÷(1/2+1/2×1/3)=
2/3÷(1/2+1/6)=
2/3÷/3+1/6 (numa 3+1 supra 6)=
2/3÷4/6=
2/3×6/4=
2/2=1...........
j) 375/1000×(25/100+1/6)×(2/10+1/3)=
375/1000 ×/3+2/12 ×/3+5/15=
375/1000×5/12×8/15=
25/200×1/3×2=
1/8×1/3×2=
1/4×1/3=
1/12.
bafta. sper ca o sa intelegi
