x + 3x = 40
4x = 40
x = 10.
Wiki User
∙ 2011-06-08 18:39:523x + 2x = 40 5x = 40 x = 8
10 - 3x = x - 2x + 40 10 - 3x = - x + 40 10 - 40 = 3x - x -30 = 2x -15 = x
4x + 10 + 3x = 40 - 3x 4x + 10 + 3x + 3x = 40 20x = 40 x = 2
5
x+30 = 3x-50 x-3x = -50-30 -2x = -80 x = 40
if 3x+5=x+19 then x=7
y=16 x= -4
X= 5
2x+9 = 49-3x 2x+3x = 49-9 5x = 40 x = 8
x + y = 17 + 23 = 40
x2 + 3x - 40 = (x + 8)(x - 5)
7x-4 = 3x+36Add 4, it cancels out.. So,7x = 3x+40Now subtract 3x from 7x..4x = 40..40 divided by 4 is 10So, X= 10