Question

1)8(4x-3)-3(2-3x)=13-40x

2)10x-5(1-4x)=5x-11

3)-3(3-4x)-5(4-3x)=12x-50

Answer 1

1)8(4x-3)-3(2-3x)=13-40x

(32x-24)-(6-9x)=13-40x

32x-24-6+9x=13-40x

41x-30=13-40x

41x+40x=13+30

81x=43

x=43/81

Vậy x=43/81

Answer 2

2)10x-5(1-4x)=5x-11

10x-(5-20x)=5x-11

10x-5+20x=5x-11

30x-5=5x-11

30x-5x=5-11

25x=-6

x=-6/25

Vậy x=-6/25

Answer 3

3)-3(3-4x)-5(4-3x)=12x-50

-(9-12x)-(20-15x)=12x-50

-9+12x-20+15x=12x-50

27x-29=12x-50

27x-12x=29-50

15x=-21

x=-21/15=-7/5

Vậy x=-7/5

Answer 4

1: =>32x-24-6+9x=13-40x

=>41x-30=13-40x

=>81x=43

=>x=43/81

2: =>10x-5+20x=5x-11

=>30x-5=5x-11

=>25x=-6

=>x=-6/25

3: =>-9+12x-20+15x=12x-50

=>27x-29=12x-50

=>15x=-21

=>x=-7/5