reponda:
a)2/5x-4
b)2x/3=-10
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a) 2 4
---- - ------ = 0
5 x 1
m.m c = 5 x
2/5 x - 20 x / 5 x = 0 / 5 x
2 - 20 x = 0
-20 x + 2 = 0
-20 x = -2
x = -2/-20
x = -1/-10
x = 1/10
b)2 x - 10
---- = -------
3 1
2 x = -30
x = -30/ 2
x = -15
---- - ------ = 0
5 x 1
m.m c = 5 x
2/5 x - 20 x / 5 x = 0 / 5 x
2 - 20 x = 0
-20 x + 2 = 0
-20 x = -2
x = -2/-20
x = -1/-10
x = 1/10
b)2 x - 10
---- = -------
3 1
2 x = -30
x = -30/ 2
x = -15
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