Rozwiąż równania a 5-x=(24-x)-(19+2x) b 9x+4x - (4+x)=2(x-1) c 3y+5=4(9+0,75z)
a) 5+x=(24-x)-(19-2x) 5+x=24-x-19+2x x+x-2x=24-19-5 0=0 b)9x-4x+(4+x)=2(x-1) 9x-4x+4+x=2x-2 9x-4x+x-2x=-2-4 4x=-6 |:4 x=-1½ c)3y+5=4(9+0,75y) 3y+5=36+3y 3y-3y=36-5 0=31
5-x=(24-x)-(19+2x)5-x=24-x-19-2x-x+3x=5-52x=0 |:2x=09x+4x-(4+x)=2(x-1)9x+4x-4-x=2x-212x-2x=-2+410x=2 |:10x=0,2
c)3y+5=4(9+0,75y)3y+5=36+3y3y-3y=36-50=31
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a) 5+x=(24-x)-(19-2x)
5+x=24-x-19+2x
x+x-2x=24-19-5
0=0
b)9x-4x+(4+x)=2(x-1)
9x-4x+4+x=2x-2
9x-4x+x-2x=-2-4
4x=-6 |:4
x=-1½
c)3y+5=4(9+0,75y)
3y+5=36+3y
3y-3y=36-5
0=31
5-x=(24-x)-(19+2x)
5-x=24-x-19-2x
-x+3x=5-5
2x=0 |:2
x=0
9x+4x-(4+x)=2(x-1)
9x+4x-4-x=2x-2
12x-2x=-2+4
10x=2 |:10
x=0,2
c)3y+5=4(9+0,75y)
3y+5=36+3y
3y-3y=36-5
0=31