oblicz
1)2(x+5)+3x=90
2)x+x-6=42
3)1\9=x+3\27
4)1\9=x-3\27
5) 4\3=3x+2\6
Przymując że ,,\" to kreska ułamkowa
1)
2(x+5)+3x=90
2x+10+3x=90
5x=90-10
5x=80 // :5
x=16
2)
x+x-6=42
2x=42+6
2x=48
x=24
3)
=x+
=x
0=x
4)
= x
5)
=3x+
-=3x
1=3x// :3
Liczę na Naj :3
2*(x+5) +3x=902x+10+3x=905x+10=90 |-10
5x= 80 |:5
x+x-6= 42
2x-6= 42 |+6
2x= 48 |:2
x= 24
1/9= x+ 3/27 |-3/27
1/9-3/27= x
1/9-1/9= x
0= x
1/9= x-3/27 |+3/27
1/9+3/27= x
1/9+1/9= x
2/9= x
4/3= 3x+2/6 |-2/6
4/3-2/6= 3x
4/3-1/3= 3x
3/3= 3x
1= 3x |:3
1/3= x
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1)
2(x+5)+3x=90
2x+10+3x=90
5x=90-10
5x=80 // :5
x=16
2)
x+x-6=42
2x=42+6
2x=48
x=24
3)
=x+
=x+
=x
0=x
4)
= x
=x
5)
=3x+
-=3x
1=3x// :3
=x
Liczę na Naj :3
2*(x+5) +3x=90
2x+10+3x=90
5x+10=90 |-10
5x= 80 |:5
x=16
x+x-6= 42
2x-6= 42 |+6
2x= 48 |:2
x= 24
1/9= x+ 3/27 |-3/27
1/9-3/27= x
1/9-1/9= x
0= x
1/9= x-3/27 |+3/27
1/9+3/27= x
1/9+1/9= x
2/9= x
4/3= 3x+2/6 |-2/6
4/3-2/6= 3x
4/3-1/3= 3x
3/3= 3x
1= 3x |:3
1/3= x