Wyznacz niewiadomą x z proporcji.
a) 5/x = 1/12
b) 2,8/x = 4/3
c) 17/2,4 = x/9,6
d) x+1/14,5
e) x+2/3
f) x-3/2 = x-8/7
1*x= 5*12
X=60
4*X= 2,8*3
4X=8,4
X = 2,1
2,4*X= 17*9,6
2,4X= 163,2
X=68
X+1 = 14,5
X=13,5
X+2 = 3
X=1
7 *(X-3) = 2*(X-8)
7X-21=2X-16
5X=5
a)5*12=1*x
x=60
b) 2,8*3=4x
4x=8,4 /4
x=2,1
c) 2,4*x= 17*9,6
2,4x= 163,2 /2,4
x=68
f) (x-3)/2= (x-8)/7
2( x-8)= 7(x-3)
2x- 16= 7x- 21
2x-7x= -21+16
-5x= -5
x=1
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a) 5/x = 1/12
1*x= 5*12
X=60
b) 2,8/x = 4/3
4*X= 2,8*3
4X=8,4
X = 2,1
c) 17/2,4 = x/9,6
2,4*X= 17*9,6
2,4X= 163,2
X=68
d) x+1/14,5
X+1 = 14,5
X=13,5
e) x+2/3
X+2 = 3
X=1
f) x-3/2 = x-8/7
7 *(X-3) = 2*(X-8)
7X-21=2X-16
5X=5
X=1
a)5*12=1*x
x=60
b) 2,8*3=4x
4x=8,4 /4
x=2,1
c) 2,4*x= 17*9,6
2,4x= 163,2 /2,4
x=68
f) (x-3)/2= (x-8)/7
2( x-8)= 7(x-3)
2x- 16= 7x- 21
2x-7x= -21+16
-5x= -5
x=1