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5/3=a/2
10=3a
-3a=-10
a=3⅓
b)
3/10=x/4
12=10x
-10x=-12
x=1,2
c)
7/14=m/21
147=14m
-14m=-147
m=10,5
d)
2/m=3/7
14=3m
-3m=-14
m=4⅔
e)
3/x=7/x+5
3x+15=7x
3x-7x=-15
-4x=-15
x=3,75
f)
m+4/2=m-3/5
5m+20=2m-6
5m-2m=-6-20
3m=-26
m=-8⅔
g)
a+3/5=7/5
5a+15=35
5a=35-15
5a=20
a=4
h)
x-2/3=2x+7/5
5x-10=6x+21
5x-6x=21+10
-x=31
x=-31
i)
5/2m+5=2/4m-1
20m-5=4m+10
20m-4m=10+5
16m=15
m=¹⁵/₁₆