Tính a) (1/2^4 - 1/4^2) . 5/19 + (5/12 - 3/4) : 1/6 b) 25% - 1 1/2
Giải thích
a) 124−142.519+512−34:16 =116−116.519+512−912:16 =0+−412:16=−13.6=−2.
b) 25%−112.−20150+0,5.125=14−32.1+12.125=14−32+1210=520−3020+2420=−120.
a) 124−142.519+512−34:16 =116−116.519+512−912:16 =0+−412:16=−13.6=−2.
b) 25%−112.−20150+0,5.125=14−32.1+12.125=14−32+1210=520−3020+2420=−120.