400
-40
10 + x = 50x = 40
x + 3x = 40 4x = 40 x = 10.
10 - 3x = x - 2x + 40 10 - 3x = - x + 40 10 - 40 = 3x - x -30 = 2x -15 = x
-4 x 10
1 x 40, 2 x 20, 4 x 10, 5 x 8 = 40
- X/4 = 10 multiply through by 4 - X = 40 apply a negative 1 X = - 40 ========check in original equation - (- 40/4) = 10 40/4 = 10 10 = 10 =======checks
mensos yo no me la seee
1 x 40, 2 x 20, 4 x 10, 5 x 8 = 40
1 x 40 2 x 20 4 x 10 5 x 8
x2+6x-40 = 0 (x+10)(x-4) = 0 x = 4 or x = -10
1 x 40, 2 x 20, 4 x 10, 5 x 8 8 x 5, 10 x 4, 20 x 2, 40 x 1