a ) 4x – 1 = 3x – 2
b ) x + 1 = 2 ( x – 3 )
c ) 2 ( x + 1 ) + 3 = 2 – x
a ) 4x – 1 = 3x – 2 b ) x + 1 = 2 ( x – 3 ) c ) 2 ( x + 1 ) + 3 = 2 – x
By Caroline
By Caroline
a ) 4x – 1 = 3x – 2
b ) x + 1 = 2 ( x – 3 )
c ) 2 ( x + 1 ) + 3 = 2 – x
a)4x−1=3x−2
⇔4x−3x=−2+1
⇔x=−1
Vậyx=−1
b)x+1=2(x−3)
⇔x+1=2x−6
⇔2x−x=1+6
⇔x=7
Vậyx=7
c)2(x+1)+3=2−x
⇔2x+2+3=2−x
⇔2x+x=2−3−2
⇔3x=−3⇔x=−1
Vậyx=−1
`a)4x-1=3x-2`
`→4x-3x=-2+1`
`→x=-1`
Vậy `x=-1`
`b)x+1=2(x-3)`
`→x+1=2x-6`
`→x-2x=-6-1`
`→-x=-7`
`→x=7`
Vậy `x=7`
`c)2(x+1)+3=2-x`
`→2x+2+3=2-x`
`→2x+x=2-5`
`→3x=-3`
`→x=-3:3`
`→x=-1`
Vậy `x=-1`