Rozwiąż równania. zadanie 9 str.177 MATEMATYKA g) 3/4 (trzy czwarte) (2-3x)= -6 h) 1/5(x-3)=9-x f) 2/5(3-x)=-2
g)
3/4*(2-3x)= -6
3/2-9x/4= -6
-9x/4= -6-3/2
-9x/4= -7,5
9x/4=7,5
9x=30
x=30/9
x=3 1/3
h)
1/5(x-3)=9-x
1/5 x- 3/5=9-x
0,2x-0,6=9-x
1,2x=9,6
12x=96
x=8
f)
2/5(3-x)=-2
6/5-2/5 x= -2
-2/5 x= -3 1/5
2/5 x= 3 1/5
x= 16/5:2/5
x= 16/5*5/2
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
g)
3/4*(2-3x)= -6
3/2-9x/4= -6
-9x/4= -6-3/2
-9x/4= -7,5
9x/4=7,5
9x=30
x=30/9
x=3 1/3
h)
1/5(x-3)=9-x
1/5 x- 3/5=9-x
0,2x-0,6=9-x
1,2x=9,6
12x=96
x=8
f)
2/5(3-x)=-2
6/5-2/5 x= -2
-2/5 x= -3 1/5
2/5 x= 3 1/5
x= 16/5:2/5
x= 16/5*5/2
x=8