Question

Tìm x

a)2.x-3-x=6

b)5-x+6=7-2.x

c)3.(x-1)-7=6

d)-(3+x)-(7-x)=5+3.x

e)-(x-6)+2.(1-x)=9

f)-2.(x+1)-3.(x-1)=6

Answer 1

a,

2.x-3-x=6

=>2.x-x=6+3

=>x=9

Answer 2

giúp mk với

Answer 3

b,

5-x+6=7-2.x

=>2x-x=7-6-5

=>x=-4

Answer 4

c,

3(x-1)-7=6

=>3(x-1)=6+7=13

=>x-1=13/3

=>x=16/3

tick nha

Answer 5

mk làm tắt thôi nhé

d

=> -3-x-7+x=5+3.x

=>-10-5=3.x

=>-15=3x=>x=-5

Answer 6

e,

=>6-x+2-2x=9

=>8-3x=9=>-3x=1

=>x=-1/3

Answer 7

f,

=>-2x-2-3x+3=6

=>1-5x=6

=>-5x=6-1=5

=>x=-1

Answer 8

a: 2x-x-3=6

=>x-3=6

=>x=9

b: 5-x+6=7-2x

=>-x+11=7-2x

=>-x+2x=7-11

=>x=-4

c: =>3x-3-7=6

=>3x-10=6

=>3x=16

=>x=16/3

d: =>-x-3-7+x=3x+5

=>3x+5=-10

=>3x=-15

=>x=-5

e: =>-x+6+2-2x=9

=>-3x+8=9

=>-3x=1

=>x=-1/3

f: =>-2x-2-3x+3=6

=>-5x+1=6

=>-5x=5

=>x=-1