4x = 72.divide both sides by 4x = 18
2y = 4x + 4y = 2x + 2
4x = 16Divide each side of the equation by 4:x = 4
3xy-4x + 15y-20 Sol: As there are no number are same. So -4x-3xy +15y-20 -------------------- -4x-3xy+15y-20
5x + 20 = 4x +30 5x - 4x = 30 - 20 x = 10
x = 5
-20 = -4x +6 add 20 to both sides 0 = -4x +26 4x = 26 x = 26/4 = 6.5
4x-5y+20 = 0 -5y = -4x-20 y = 4/5x+4 which is now in slope intercept form
-20=-4x-6x -20=-10x {collect like terms} x=2 {divide each side by -10}
-4x-6x = -20 -10x = -20 Divide both sides by -10 rembering that a minus divided into a minus the result is positive: x = 2
7x = 20 + 4xSubtract 4x from each side of the equation:3x = 20Divide each side by 3 :x = 20/3
-4x+3 = 23+6x -4x-6x = 23-3 -10x = 20 x = -2
4x -17 equals 3 4x equals 20 x equals 5
6x + 14 = 20 + 4x ------ Combine like terms (subtract 4x and 14 from both sides). 2x = 6 --------------------- Divide by 2. x = 3
4x = 72.divide both sides by 4x = 18
-12 (?)
-3