It all depends on what y equals. First, solve for the equality.
-9y = -45 solves to be y=5.
Now, to find out which side of 5 is going to be less, you check what happens if you put in y=0.
-9(0) > -45
Numbers on the same side of 5 that zero lies on are going to be bigger.
Putting it together, you find that y > 5 gives less than -45 and y<5 gives greater than -45.■
-9y + 8 = -91-9y = -91 -8-9y = -99y = -99-----9y = 11-99/-9 = 11 because -9X11 = -99
-9y-15x ---- -3
9y - 4x
x2 - 81y2 = (x + 9y) (x - 9y)The actual numerical value depends on the values of 'x' and 'y'.
1
57+9y=81y+12 45=72y 45/72=y
The GCF is 9y^2.
The expression "8 less than the product of y and 9" can be represented as 9y - 8. This is because you first multiply y by 9 to get the product of y and 9, and then subtract 8 from that product. So, 9y - 8 is the algebraic expression for "8 less than the product of y and 9."
To simplify this expression, you combine your like terms (9y and 1y). 9y - 1y = 8y 8y - 25 is your answer. It can't be simplified any further than that.
9y - 9 = -117 9y - 9 + 9 = -117 + 9 9y = -108 9y/9 = -108/9 y= -12
-9y + 8 = -91-9y = -91 -8-9y = -99y = -99-----9y = 11-99/-9 = 11 because -9X11 = -99
314-9y = 305
9y-3 = 6
x + y = 16 so x = 16 - y 10y + x = 10x + y - 18 9y = 9x - 18 ie 9y = 144 - 9y - 18 ie 18y = 126: y = 7 so original number was 79
All sides of a rhombus are the same length. So x + 9 = 50 so that x = 41 Also, 9y + 5 = 50 so that 9y = 45 and therefore y = 5
-9y-15x ---- -3
9y - 4x