5 . ( 3 - x ) 2 . ( x - 7 ) = -14

Question

5 . ( 3 - x ) + 2 . ( x - 7 ) = -14

catlantuong · Answer

5 . ( 3 - x ) + 2 . ( x - 7)=-14   15 - 5x + 2x -14 = -14   -5x + 2x   = -14 + 14 - 15     -3 x          = -15        x           = 5

maianhtuanh · Answer

5 . (3-x) + 2 . (x-7) = -14    5.3 - 5x + 2x - 14 = -14    15 - 3x = (-14)+14    3(5-x) = 0    5-x = 0    x = 5   Vậy x=5

5 . ( 3 – x ) + 2 . ( x – 7 ) = -14