5x + 2 = 22 5x = 22 - 2 5x = 20 5x/5 = 20/5 x=4
If as a straight line equation: 5x+2y = 20 then y = -2.5x+10 whereas -2.5 is the slope and 10 is the y intercept
23
7
x = -1.2, y = -3
5x + 2 = 22 5x = 22 - 2 5x = 20 5x/5 = 20/5 x=4
-5x + 30 = 20 -5x + 30 - 30 = 20 - 30 -5x = -10 -5x / -5 = -10 / -5 x = 2
If: 5x+1 = 21 Then: 5x = 21-1 => 5x = 20 Divide both sides by 5 and so x = 4
If as a straight line equation: 5x+2y = 20 then y = -2.5x+10 whereas -2.5 is the slope and 10 is the y intercept
5x + 20 = 4x +30 5x - 4x = 30 - 20 x = 10
you cant
23
7
x = -8
3
x = -1.2, y = -3
-5x+50 = 25 -5x = 25-50 -5x = -25 x = 5