7x + 16 = 3x + 4 4x = -12 x = -3
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
x=6
7x-4020+3x= 7x+-4020+3x= 7x+3x+-4020= 10x+-4020= 10x-4020
-46 = 3x + 7x
3+3x+7x=13 3x+7x=10 10x=10 x=1
3x+7x+3+y= 10x+3+y
Factorise it: (x + 5)(3x - 8)
7x-40 = -3x Add 40 and add 3x to both sides:- 7x-40+40+3x = 3x-3x+40 10x = 40 Divide both sides by 10:- x = 4
8+7x = 20+3x 7x-3x = 20-8 4x = 12 x = 3
40 -7x = -16 -7x = -16 -40 -7x = -56 x = 8
simplify it, 7x-12=x+2+2x-3x 7x=2+12+3x-3x 7x=14 x=2