-19×(4+(-2)) =-19×4+(-19)×X
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-19×{4+(-2)}=-19×4+(-19)×x -19×{4-2}=-19×4+(-19)×x -19×2=-76+(-19)×x -38= -76-19x -38+76= -19x 38= -19x 38÷19= -x 2= -x x= -2
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