Oblicz x z proporcji :
a)
9-x x
___ = ___
3 2
b)
x-3 3,5
_____ = _____
2x 4
a) 2(9-x)=3x
18-2x=3x
18=3x+2x
18=5x
x=3,6
b)4(x-3)=2x*3,5
4x-12=7x
-12=7x-4x
-12=3x
x=-4
Mam to w zeszycie :D
a) 3x = 2 * (9 - x)
3x = 18 - 2x
x = 18
b) 2x * 3,5 = 4 * (x - 3 )
7x = 4x - 12
3x = -12 |:3
x = -4
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
a) 2(9-x)=3x
18-2x=3x
18=3x+2x
18=5x
x=3,6
b)4(x-3)=2x*3,5
4x-12=7x
-12=7x-4x
-12=3x
x=-4
Mam to w zeszycie :D
a) 3x = 2 * (9 - x)
3x = 18 - 2x
x = 18
b) 2x * 3,5 = 4 * (x - 3 )
7x = 4x - 12
3x = -12 |:3
x = -4