Question

1)6x-8=3x+1

2)12-10x=25-30x

3)3(2x+3)-2(4x-5)=10x+21

4)5(5x-3)-3(2x-4)11-5x

5)4(2-3x)-5(1-2x)=4-6x

6)8(4x-3)-3(2-3x)=13-40x

7)10x-5(1-4x)=5x-11

8)-3(3-4x)-5(4-3x)=12x-50

9)-2(20x-3)-3(4x-5)=9-2(2x-3)

10)-5(2-3x)+3(5-2x)=3x+3(3-5x)

Answer 1

1)6x-8=3x+1

6x-3x=1+8

3x=9

x=3

Vậy x=3

Answer 2

2: 12-10x=25-30x

=>20x=13

=>x=13/20

3: \(3\left(2x+3\right)-2\left(4x-5\right)=10x+21\)

=>6x+9-8x+10=10x+21

=>10x+21=-2x+19

=>12x=-2

=>x=-1/6

4: \(\Leftrightarrow25x-15-6x+12=11-5x\)

=>19x-3=11-5x

=>24x=14

=>x=7/12

5: \(\Leftrightarrow8-12x-5+10x=4-6x\)

=>4-6x=-2x+3

=>-4x=-1

=>x=1/4

6: \(\Leftrightarrow32x-24-6+9x=13-40x\)

=>41x-30=13-40x

=>81x=43

=>x=43/81

7: \(\Leftrightarrow10x-5+20x=5x-11\)

=>30x-5=5x-11

=>25x=-6

=>x=-6/25