Toán Lớp 6: 6-(3-x)=-5-3x
25+(7-x)=31-(3x+3)
(5x-6)-(2x+5)=2x-10
1-(6x-3)=6-9x-8)
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Toán Lớp 6: 6-(3-x)=-5-3x
25+(7-x)=31-(3x+3)
(5x-6)-(2x+5)=2x-10
1-(6x-3)=6-9x-8)
Comments ( 2 )
Đáp á+Lời giải và giải thích chi tiết:
6-(3-x)=-5-3x
-(3-x)+3x=-5-6
-3+x+3x=-11
4x=-11+3
4x=8
x=2
Vậy x=2
_______________________________
25+(7-x)=31-(3x+3)
7-x+3x+3=25+31
10+2x=56
2x=56-10
2x=46
x=46:2
x=23
Vậy x=23
_____________________________________
(5x-6)-(2x+5)=2x-10
5x-6-2x-5=2x-10
3x-11=2x-10
3x-2x=11-10
x=1
Vậy x=1
________________________________________
1-(6x-3)=6-9x-8)
1-6x+3=6-9x-8
-6x+4=-2-9x
-6x+9x=-4-2
3x=-6
x=-2
Vậy x=-2
Giải đáp + Lời giải và giải thích chi tiết:
6-(3-x)=-5-3x
6-3+x=-5-3x
x+3x=-5-6+3
4x=-8
x=-2
Vậy x=-2
25+(7-x)=31-(3x+3)
25+7-x=31-3x-3
-x+3x=31-3-25-7
2x=-4
x=-2
Vậy x=-2
(5x-6)-(2x+5)=2x-10
5x-6-2x-5=2x-10
5x-2x-2x=-10+6+5
x=1
Vậy x=1
1-(6x-3)=6-(9x-8)
1-6x+3=6-9x+8
-6x+9x=6+8-1-3
3x=10
x=10/3
Vậy x=10/3