-2
Solve for y: f(-5)=13+2x
2x - 4 = -10 2x = -10 +4 2x = -6 x = -3
7x=2x-4 5x=-4 x=-4/5
Add 4x + 2x = 6x + 4 = 6x + 4
3x+4 = 2x-3 3x-2x = -3-4 x = -7
2x + 3(x -4) = 18
3x - 2 = 2x + 4 3x - 2x = 4 + 2 x = 6
you add 4 to both sides (2x-4 and 16) to cancel out the 4 and get 2x=20. then you divide both sides by 2.
-2x -4 = 10 -2x = 14 -x = 14/2 -x = 7 x = -7 easy.
2x+3 = 7 2x = 7-3 2x = 4 x = 2
3x + 2x = 5x. 5x= (-4) X = (-4)/5 x= -0.8
2x+1 = 9 2x = 9-1 2x = 8 x = 4