Rozwiąż równanie:
e)
f)\frac
g)
h)
i)
0,8x=3,6 x=4,5
(x-5)5=21 5x-25=21 5x=46 x= 46/5
2x=3x+15 -x=15 x=-15
28+4x=5x+30 -x=-2 x=2
0,8x=3,6/:0,8
x=4,5
(x-5)*5=7*3
5x-25=21
5x=21+25
5x=46/:5
x=9,2
3*(x+5)=2x
3x+15=2x
3x-2x=-15
x=-15
(x+6)*5=4*(7+x)
5x+30=28+4x
5x-4x=28-30
x=-2
f)
0,6*6=0,8x
3,6=0,8x
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0,8x=3,6 x=4,5
0,8x=3,6 x=4,5
(x-5)5=21 5x-25=21 5x=46 x= 46/5
2x=3x+15 -x=15 x=-15
28+4x=5x+30 -x=-2 x=2
e)
0,8x=3,6/:0,8
x=4,5
g)
(x-5)*5=7*3
5x-25=21
5x=21+25
5x=46/:5
x=9,2
h)
3*(x+5)=2x
3x+15=2x
3x-2x=-15
x=-15
i)
(x+6)*5=4*(7+x)
5x+30=28+4x
5x-4x=28-30
x=-2
f)
0,6*6=0,8x
3,6=0,8x
0,8x=3,6/:0,8
x=4,5