Question

Wykonaj działanie:L;

f) 6 2/3 x (0.25 + 1/5)
g) 1 5/9 : 1 1/3 x 0.75
h) 3 1/3-1/3 x 0,6
i) 3 4/9 - 1 2/3 x 1,8
j) 4,5 x 5 5/9 +6,4 x 3/9

PS.Musi być kolejność wykonywania działań.

Answer 1

F) 6 2/3 * (0,25 + 1/5) = 20/3 * (0,25 + 0,2) = 20/3 *  0,45 = 20/3 * 45/100 = 20/3 * 9/20 = 9/3 = 3

g) 1 5/9 : 1 1/3*0,75 = 14/9 : 4/3 * 3/4 = 14/9 * 3/4 * 3/4 = 126/144 = 63/72 = 7/8

h) 3 1/3 - 1/3*0,6 = 3 1/3 - 1/3*3/5 = 3 1/3 - 1/5 = 3 5/15 - 3/15 = 3 2/15

i) 3 4/9 - 1 2/3*1,8 = 3 4/9 - 5/3*9/5 = 3 4/9 - 3 = 4/9

j) 4,5*5 5/9 + 6,4*3/9 = 9/5 * 50/9 + 32/5*1/3 = 10 + 32/15 = 10 + 2 2/15 = 12 2/15