-7x + 6 + 7x - 2 = 4
-1.5
9x-4 = 7x+8 9x-7x = 8+4 2x = 12 x = 6
x2+7x=-2x2+6 3x2+7x-6=0 (3x-2)(x+3)=0 3x-2=0 or x+3=0 x=2/3 or x=-3
x2 + 7x + 6 = (x + 6) (x + 1)
-7x + 6 + 7x - 2 = 4
7x+6 = -3x-24 7x+3x = -24-6 10x = -30 x = -3
4x+9 = 7x+3 4x-7x = 3-9 -3x = -6 x = 2
7x-4=x+2 7x=x+2+4 7x=x+6 7x-x=6 6x=6 X=1
x2 + 7x = 2x2 + 6 x2 - 2x2 + 7x = 6 -x2 +7x - 6 = 0 or alternatively x2 - 7x + 6 = 0
7x+y=6
7x-3=39 7x=42 x=6
9x+6 = 7x+18 9x-7x = 18-6 2x = 12 x = 6
-4x-1-3x-4+5 = -7x-1-2x+1+6 -7x = -9x+6 2x = 6 x = 3
X= (3/5 , -2)
6
x=6