9
Divide both sides by -5: so y = -12
If: x = -5 Then: y = (3*-5)-1 = -16
3y+5=y-3 subtract the y from the other side then: 2y+5=-3 subtract the 5 2y=-8 then divide 2 by both sides and your final answer should be: y= - 4
y=-2
9
You cannot have xy= anything. Only x can be there at the end. x=5y=5 Divide 5y for all 3 sides to get 5xy=y Then divide y from both sides to get 5x=1 Therefore, x=1/5
Divide both sides by -5: so y = -12
5y = 4x - 35 Divide each side of the equation by 5 : y = 4/5 x - 7
5y + 24 = 29 5y = 5 (subtract 24 from both sides) y = 1 (divide by 5)
Add the two equations: 3x = 15 Divide by 3: x = 5, making y = -3. Job done.
If: x = -5 Then: y = (3*-5)-1 = -16
3y+5=y-3 subtract the y from the other side then: 2y+5=-3 subtract the 5 2y=-8 then divide 2 by both sides and your final answer should be: y= - 4
y=-2
-1
y = -2/5
5x = 7y , we divide both side by 'y' 5x/y = 7y/y (y will now be deducted) 5x/y = 7 x/y = 7/5 Therefore, x:y = 7:5