9
9y + 5 = 0 (-5 on both sides)9y = -5 (/9 on both sides)y = -5/9
3x-3y=-9 and 9x-9y=-27 both simplifies to x-y=-3.
If 92y = 36 then y = 36/92 = 9/23 So then 9y = 9*(9/23) = 81/23 or 312/23
13 x 9 = 117
9 + 9y = 27x -9 -9 9y = 27x - 9 9y/9 = 27x/9 - 9/9 y = 3x -1
9
-9
9y + 5 = 0 (-5 on both sides)9y = -5 (/9 on both sides)y = -5/9
3x-3y=-9 and 9x-9y=-27 both simplifies to x-y=-3.
-9y + 8 = -91-9y = -91 -8-9y = -99y = -99-----9y = 11-99/-9 = 11 because -9X11 = -99
9Y^4 * Y^5 add exponents and coefficients multiplied 9Y^9
92y = 36 y = 36/92 = 9/23 Then: 9y = 81/23
If 92y = 36 then y = 36/92 = 9/23 So then 9y = 9*(9/23) = 81/23 or 312/23
13 x 9 = 117
y = 3 in the equation 31 = 4 - 9y Solve for y. 31 - 4 = 4 - 9y - 4 Simplify 27 = 9y Divide both sides by 9 to get the term y by itself on one side of the equation. 27 / 9 = 9y / 9 Simplify 3 = y
(1) 9x-2y=73 (2) 5x-9y=9 from (1) 9x-2y+2y=73+2y => 9x= 73+2y => x = (73+2y)/9 put into (2) 5x-9y = 9 => 5(73+2y)/9 - 9y=9 => 10y/9 + 365/9 -9y = 9 => 10y/9 - 9y = 9 -365/9 = -284/9 => -71y/9 = -284/9 => 71y= 284 => y = 284/71 = 4 and x = (73+2*4) / 9 = 9