Đáp án:
`↓↓`
Giải thích các bước giải:
`a) 3x - 2 = 2x - 3`
`⇔3x - 2 - 2x + 3=0`
`⇔x + 1=0`
`⇔x=-1`
`b)3 - 4y + 24 + 6y=y + 27 + 2y`
`⇔3 - 4y + 24 + 6y -y - 27 - 2y=0`
`⇔-y =0`
`⇔y =0`
`c)x - 12 + 4x=25 + 2x - 1`
`⇔x - 12 + 4x - 25 - 2x + 1=0`
`⇔3x - 36=0`
`⇔3x =36`
`⇔x =12`
`d)8x - 3 =5x + 12`
`⇔8x - 3 - 5x - 12=0`
`⇔3x - 15=0`
`⇔3x =15`
`⇔x =5`
`e)7 - 2x=22 - 3x`
`⇔7 - 2x - 22 + 3x=0`
`⇔-15+ x =0`
`⇔x =15`
`f)x + 2x + 3x - 19=3x + 5`
`⇔x + 2x + 3x - 19 - 3x - 5=0`
`⇔3x - 24=0`
`⇔3x =24`
`⇔x =8`
`g)11 + 8x - 3=5x - 3 + x`
`⇔11 + 8x - 3 - 5x + 3- x=0`
`⇔11 + 2x=0`
`⇔2x =-11`
`⇔x =\frac{-11}{2}`
`h)4 - 2x + 15=9x + 4 - 2x`
`⇔4 - 2x + 15 - 9x - 4 + 2x=0`
`⇔15 - 9x=0`
`⇔-9x =15`
`⇔x=\frac{-15}{9}`
