Rozwiąż równanie :
a) 5/3 = a/2
b) 3/10 = x/4
c) 7/14 = m/21
d) 2/m = 3/7
e) 3/x = 7/x+5
f) m+4/2 = m-3/5
g) a+3 / 5 = 7/5
h) x-2/3 = 2x+7/5
i) 5/2m+5 = 2/4m-1
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a)5/3=1/2 ; 3a=10 /:3 ; a=10/3 ; a=3 1/3
b)3/10=x/4 ; 10x=12 /:10 ; x= 12/10 ; x=1 2/10 ; x= 1 1/5
c) 7/14=m/21 ; 14m=147 / :14 ; m = 10,5
d)2/m=3/7 ; 3m=14 / : 3 ; m=14/3 ; m= 4 2/3
e) 3/x=7x+5 ; 3x=7x+5 ; 3x+ 7x=5 ; 10x=5 / :10 ; x=5/10 ; x=1/2
f) tego nie wiem :D
g) a+3/5=3/7 ; a+15=35 ; a= 35+15 ; a= 50
h)x-2/3=2x+7/5 ; 2x-x= 7/5+2/3 ; x=21/15 +10 /15 ; x=31/15 ; x= 2 1/15
i)5/2m+5=2/4m-1 ; 5/2m - 2/4m=-1-5 ; 10/4m-2/4m=-6; 8/4m =-6 ; 2m=-6 ; m=-3