Question

Oblicz
a ( 0,8 - 3/4 ) * 1/7
b 0,8 -3/4 : 7
c 4/5 - 0,75 * 1/7

Answer 1

A) (0,8 - 3/4) * 1/7 = (8/10 - 3/4) * 1/7 = (16/20 - 15/20) * 1/7 = 1/20 * 1/7 = 1/140

b) 0,8 - 3/4 : 7 = 0,8 - 3/4 * 1/7 = 0,8 - 3/28 = 8/10 - 3/28 = 224/280 - 30/280 = 194/280 = 97/140

c) 4/5 - 0,75 * 1/7 = 4/5 - 3/4 * 1/7 = 4/5 - 3/28 = 224/280 - 30/280 = 194/280 = 97/140

Answer 2

A)0.05*1/7=0.0071
b)0,8-0,107=0,693
c)4/5-0.107=0.693
yyyyy... to chyba tak :)