\(\frac{149.150.151}{3}-\frac{2.3.4}{3}=1124942\)
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\(\frac{149.150.151}{3}-\frac{2.3.4}{3}=1124942\)
giúp mình với
a) A=1/3.4-1/4.5-1/5.6-...-1/9.10
b)B=7/3.4-9/4.5+11/5.6-13/6.7+15/7.8-17/8.9
Ai làm được mình cho 1 like :))
S1=2.3+3.4+4.5+5.6+....+15.16+16.17
2.x-[3.4+4.5+5.6+....+79.80]=12
C=1.2+2.3+3.4+4.5+5.6+...+99.100
1/2.3+1/3.4+1/4.5+1/5.6+1/6.7
A=1.2+2.3+3.4+4.5+5.6+.......+99.100+100.101
1/3.4+1/4.5+1/5.6+...+1/97.98+1/98.99
A= 1/3.4+ 1/4.5+1/5.6+...+1/95.96
Tính 1/3.4+1/4.5+1/5.6+...+1/99.100