2/3=x/9
3x+5=10+2x/4
2-x/0,2x+1=5/3
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3x= 18 / : 3
x = 6
3x+5=10+2x/4 /*1
12x + 20=10 + 2x / -2x - 20
10 x = -10 /:10
x= -1
5( 0.2x+1) = 3 (2-x)
x+5 = 6 - 3x / -5 +3x
4x= 1 /:4
x= 1/4
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2/3=x/9
3x= 18 / : 3
x = 6
3x+5=10+2x/4 /*1
12x + 20=10 + 2x / -2x - 20
10 x = -10 /:10
x= -1
2-x/0,2x+1=5/3
5( 0.2x+1) = 3 (2-x)
x+5 = 6 - 3x / -5 +3x
4x= 1 /:4
x= 1/4