Question

Bożeee ! :O Ludzie pomocy ! Matma -.-

a) 10,6-4 2/3 + 16 1/15 = ?

b) 6 1/2 + ( 3 1/2 - 1/2 ) : 2 5/6 - 1 3/4 = ?

c ) 7,13: (2,75 - 1 3/5 ) =?

Z góry dziękuje :**

Answer 1

a) 10,6-4 2/3 + 16 1/15 =  10 6/10 - 4 2/3+ 16 1/5 = 318/30 - 140/30 + 486/30 = 178/30+486/30 = 664/30 = 22 4/30 = 22 2/15

b) 6 1/2 + ( 3 1/2 - 1/2 ) : 2 5/6 - 1 3/4 = 6 1/2 + 3 : 17/6 - 1 3/4= 6 1/2+ 3* 6/17 + 1 3/4= 6 1/2+ 18/17 + 1 3/4 = 442/68 + 72/68 + 119/68 = 663/68 = 9 3/4

c ) 7,13: (2,75 - 1 3/5 ) = = 7,13 : (2,75 -1,6 ) = 7,13:1,15 = 6,2

Answer 2

a) = 10 i 6/10 - 4 i 2/3 + 16 i 1/15 = 106-14/3+240/15 = 318/30-140/30+241/15= 178/30 + 482/30=660/30= 22

b) = 6,5+(3 2/6-3/6):2 5/6-1 3/4=

=6,5+(2 8/6-3/6):2 5/6-1 3/4=6,5+2 5/6:17/6-1 3/4=

=6,5+17/6:17/6-1 3/4=6 1/2+17/6*6/17-1 3/4=

=6 1/2+1-1 3/4=7 1/2-1 3/4=7 2/4-1 3/4=6 6/4-1 3/4=5 3/4

 

c) = 7,13 : (2,75 - 1,6) = 7,13:1,15 = 6,2.