\(a.\frac{27.45+27.55}{2+4+6+...+14+16+18}\)
\(b.\frac{26.108-26.12}{32-28+24-20+16-12+8-4}\)
\(c.\frac{27.4500+135.550.2}{2+4+6+...+14+16+18}\)
\(d.\frac{48.700-24.45.20}{45-40+35-30+25-20+15-10+5}\)
Tính thuận tiện nhất
A)\(\frac{\left(315+372\right).3+\left(372+315\right).7}{26.13+74.14}\)
B) \(\frac{1978.1979+1980.21+1958}{1980.1979-1978.1979}\)
C)\(\frac{26.108-26.12}{32-28-24-20+16-12+8-4}\)
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Cảm ơn vì đã giải cho mk nè
A,tính nhanh \(\frac{1978.1979+1980.21+1958}{1980.1979-1978.1979}\)
B,rút gọn \(\frac{5^2.6^{11}.16^2+6^2.12^6.15^2}{2.6^{12}.10^4-81^2.960^1}\)
a)Tính nhanh: \(\frac{1978.1979+1980.21+1958}{1980.1979-1978.1979}\)
b)Rút gọn: \(\frac{5^2.6^{11}.16^2+6^2.12^6.15^2}{2.6^{12}.10^4-81^2.960^3}\)
tính \(\frac{1978.1979+1980.21+1958}{1980.1979-1978.1979}\)
Tính nhanh:
\(\frac{1978.1979+1980.21+1958}{1980.1979-1978.1979}\)
\(\frac{1978.1979+1980.21+1958}{1980.1979-1978.1979}\)
Tính nhanh: \(\frac{1978.1979+1980.21+1958}{1980.1979-1978.1979}\)
\(\frac{1978.1979+1980.21+1958}{1980.1979-1978.1979}\)
Tính nhanh nha !