Question

a) 4 1/2 + 3 * 2 3/4 = ?

b) 17/40 - 1/5 : 1 3/5 = ?

c) 1 2/10 : 3/5 - 1 1/3 * 3/10 = ?

d) (3/4 + 7/9 ) * (2 3/8 - 6/16 ) = ?

e) 32 - 2 * ( 7 2/5 * 5 - 2 1/2 : 10 ) : 6 = ?


Proszę o dokładne , szczegółowe obliczenia ... ;D

Answer 1

a) 4 2/4 +3* 11/4= 4 2/4 + 33/4= 4 35/4 = 12 3/4

b)17/40 -1/13=221/520 - 40/520 = 181/520

nie wiem czy to się skróci.

c)12/10 *5/3- 4/3*3/10 = 2 - 2/5 = 1 3/5

d)(27/36 + 28/36)* ( 19/8 -3/8) = 55/36* 16/8 = 3 1/18

e) 32 - 2 * ( 7 2/5 * 5 - 2 1/2 : 10 ) : 6 =32- 2* (72-5/2 * 1/10) ;6= 32-2*(72-5/20);6= 32-2*71 3/4;6= 32- 2* 287/4 :6= 32-287/2 :6= 32 - 287/2 * 1/6 = 32- 287/12=32- 23 11/12= 9 1/12

Answer 2

a) 4 1/2 + 3 * 2 3/4 = 4 1/2 + 8 1/4 = 4 2/4 + 8 1/4 = 12 3/4

b) 17/40 - 1/5 : 1 3/5 = 17/40 - 1/4 : 8/5=17/40-1/4*5/8=17/40-5/32=68/160-25/160=43/160

c)1 2/10 : 3/5 - 1 1/3 * 3/10 =12/10:3/5-1 1/3*3/10=12/10*5/3-1 1/3*3/10=2/1-4/3*3/10=2/1-2/5=10/5-2/5=8/5=1 3/5

d)(3/4 + 7/9 ) * (2 3/8 - 6/16 ) = (27/36+28/36)*(2 3/8-6/16)=55/36*(2 3/8-6/16)=55/36*(2 6/16-6/16)=55/36*2=55/36*2/1=55/18=3 1/18

e) 32 - 2 * ( 7 2/5 * 5 - 2 1/2 : 10 ) : 6 = 32-2*(37/5*5/1-2 1/2:10):6=32-2*(37/1-2 1/2:10):6=32-2*(37/1-5/2:10/1):6=32-2*(37/1-5/2*1/10):6=32-2*(37/1-1/4)=32-2*(148/4-1/4):6=32-2*146/4:6=32-2/1*146/4:6/1=32-146/2:6/1=32-146/2*1/6=32-73/6=32/1-73/6=192/6-73/6=119/6=19 5/6