Wszystko zrobione. 11 tutaj, bo mozna dac tylko 5zalacznikow
11
a)
4/5=x/7
5x=4*7
5x=28/:5
x=28/5
X=5 3/5
b)
x/4=x+3/2
2x=4(x+3)
2x=4x+12
2x-4x=12
-2x=12/:(-2)
x=-6
c)
x/2,4=1,1/1,32
13,2x=2,4*1,1
13,2x=2,64/:1,32
x=2
d)
5/x+3=4/x-2
5(x-2) =4(x+3)
5x-10=4x+12
5x-4x=12+10
X=22
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Wszystko zrobione. 11 tutaj, bo mozna dac tylko 5zalacznikow
11
a)
4/5=x/7
5x=4*7
5x=28/:5
x=28/5
X=5 3/5
b)
x/4=x+3/2
2x=4(x+3)
2x=4x+12
2x-4x=12
-2x=12/:(-2)
x=-6
c)
x/2,4=1,1/1,32
13,2x=2,4*1,1
13,2x=2,64/:1,32
x=2
d)
5/x+3=4/x-2
5(x-2) =4(x+3)
5x-10=4x+12
5x-4x=12+10
X=22