1)wykonaj dzialania i oblicz wartosc liczbowa wyrazenia.
a) 3(x-1)-2 dla x=4,2
b) 2(y+6)-4(y-6) dla y=1/2
c) 3(a-8)-(5-2a) dla a=-0,5
d)4(x-y)-(-x+y) dla x= 3/2 y= -1
2)wykonaj dzialaniai oblicz wartosc liczbowa wyrazenia.
a)4(y-3)-3(x+1) dla x=4 , y=2
b) 3(2b+1)-4(a-2) dla a=7 , y=1
c)9(x-7y)-(5y-2x)+20y dla x=0,5 y=0,3
d)(5x+7Y)-8(y+1)+3(x-y) dla x= 1/2 y= 1/4
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
1
a) 3(4,2-1)-2=
=12,6-3-2=
=7.6
b)2(1/2 +6)-4(1/2-6)=
=1+12-2+24=
=35
c) 3(0,5-8)-5+2=
=1,5-24-3=
=25,5
d) 4(3/2-(-1)-(-3/2 +(-1)=
=6+4+3/2+1=
=12 1/2
2
a)4(2-3)-3(4+1)=
=8-12-12-3=
=-21
b)3(2+1)-4(7-2)=
=6+3-21+8=
=-4
c)9(0,5-7*0,3)-(5*0,3-2*0,5)+20*0,3=
=4,5-18,9-1,5+1+6=
=-8,9
d) (5*1/2+7*1/4)-8(1/4+1)+3(1/2-1/4)=
=(2 1/2+1 3/4)-2-8+1 1/2-3/4=
=4 1/4-2-8+1 2/4-3/4=
=-3