Question

2(3-x)=4-x

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Answer 1

\(2\left(3-x\right)=4-x\)

 \(\Leftrightarrow6-2x=4-x\)

 \(\Leftrightarrow-2x+x=4-6\)

 \(\Leftrightarrow x=2\)

Answer 2

2(3 - x) = 4 - x

6 - 2x = 4 - x

2x - x = 6 - 4

x = 2

Chúc bạn học tốt ^^

Answer 3

2(3 - x) = 4 - x

2(3 - x) = -2 (x - 3)

4 - x      = -(x - 4)

-2 (x - 3) = - (x - 4)

6 - 2x      =  4 - x

6 - 4        = x - 2x

-2             = -x

=> 2 = x