5x-19 = 16 5x = 16+19 5x = 35 x = 7
5x+1=20 5x=20-1 5x=19 5x/5=19/5 x=19/5
39 = 5x + 9 5x = 39 - 9 5x = 30 x = 30 / 5 x = 6
You do not.
5X - 19 = 16 add 19 to both sides 5X - 19 + 19 = 16 + 19 5X = 35 divide each sides integers by 5 (5/5)X = 35/5 X = 7 ---------------check in original equation 5(7) - 19 = 16 35 - 19 = 16 16 = 16 ------------checks
5x-19 = 16 5x = 16+19 5x = 35 x = 7
5x+1=20 5x=20-1 5x=19 5x/5=19/5 x=19/5
8x-10 = 9-5x Therefore: 8x + 5x = 9 + 10 13x = 19 x = 1 6/19. To solve we moved the x's to one side of the equation and the numbers (constants) to the other side. Then we could simplify to solve for the value of x.
39 = 5x + 9 5x = 39 - 9 5x = 30 x = 30 / 5 x = 6
5x² - 18x + 9 = (5x² - 15x) - (3x - 9) = 5x(x - 3) - 3(x - 3) = (5x - 3)(x - 3).
5x = 4x + 9 x = 9
5x - 9 = 4x 5x - 4x - 9 = 4x - 4x x - 9 = 0 x - 9 + 9 = 0 + 9 x = 9
You do not.
5X - 19 = 16 add 19 to both sides 5X - 19 + 19 = 16 + 19 5X = 35 divide each sides integers by 5 (5/5)X = 35/5 X = 7 ---------------check in original equation 5(7) - 19 = 16 35 - 19 = 16 16 = 16 ------------checks
9(5x) = 45x simplified
25x2+30x+9 25*9=225 15*15=225 15+15=3025x2+15x+15x+9[5*5xx 3*5x] [3*5x 3*3]5x(5x+3)+3(5x+3)(5x+3)(5x+3)Answer: (5x+3)2
It is 12x + 11y + 9.