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12*14=7m
168=7m /:7
m=24
b)2/m=³₇
3m=2*7
3m=14/:3
m=¹⁴₃
c)3/x=7/x+5
3/x-7/x=5
-4/x=5 /*x
-4=5x/: 5
x= -4/5
d)m+4/2=m-3/5
2+m=m-3/5
2m=2-3/5
2m=7/5
m=7/5 :2
m=7/5 *1/2
m=7/10
e)a+3/5/=⁷₅
a=7/5-3/5
a=4/5
f)x-2/3=2x+7/5
-2/3-7/5=x
x=-10/15 -21/15
x=-31/15
x=-2¹₁₅
g)5/2m+5=2/4m-1
5/2m-2/4m=-6
10/4m-2/4m=-6
8/4m=-6 /*4m
8= -6*4m /:-6
8/-6=4m
-4/3 = 4m / :4
m= -4/3 *1/4
m= -4/12
m= - 1/3