Question

Tìm x :

3 . ( x + 2 ) = 2 . ( 10 - x ) + 16

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Answer 1

3 . ( x + 2 ) = 2 . ( 10 - x ) + 16

3 . x + 3 . 2 = 2 . 10 - 2 . x + 16

3x + 6 = 20 - 2x + 16

3x + 2x = -6 + 20 + 16

5x = 20 - 6 + 16

5x = 14 + 16

5x = 30

x = 30 : 5

x = 6

Vậy x = 6

Answer 2

3.(x+2)=2.(10-x)+16

3x+6=20-2x+16

3x+2x=20-6+16

5x=30

x=30:5

x=6

Vậy x=6