7 and 4
5x -6y=-30 5x-6y=30 (2x+3y) (2x-3y)=30 4x+6y=30 4x=30 x=30/4
a numerical expression is just an expression without any equal or unequal signs, e.g. (a+2b)c or 5x-6y an equation shows two expressions with an equal sign, e.g. (a+2b)c = 53 or 5x-6y = 3k2-7k+21
Three.
That's not an equation, it is not solveable.
(4, -2)
25x2 - 36y2 = ( 5x + 6y ) ( 5x - 6y )
5x+6y<=30
- 5x - 6y - 8 = 0Add (5x + 8) to each side:- 6y = 5x + 8Divide each side by -6 :y = (-5/6)x - 8/6y = - 5x/6 - 4/3
5x -6y=-30 5x-6y=30 (2x+3y) (2x-3y)=30 4x+6y=30 4x=30 x=30/4
-5x + 6y = 24 6y = 5x + 24 y = 5/6 x + 4 the slope is 5 6
- 5x - 6y - 8 = 0Add (5x + 8) to each side:- 6y = 5x + 8Divide each side by -6 :y = (-5/6)x - 8/6y = - 5x/6 - 4/3
5x - 6y = -5At the x-intercept, y = 0 ==> 5x = -5x = -1At the y-intercept, x = 0 ==> -6y = -5y = 5/6
Watch closely:5x - 6y = 13Subtract 5x from each side of the equation:-6y = 13 - 5xDivide each side by -6 :y = 5x/6 - 13/6
the simplest form of 5x + 3y +2x - 6y is 7x-3y
If you mean: -5x+6y = 30 then y = 5/6x+5 as a straight line equation
If it's inside the brackets it means that it belongs to that specific term, but if it was outside the brackets, it means that every term inside the brackets goes out with opossite sign. For example: [ -5x + 6y ] = -5x + 6y , the negative is only for 5x, but if you had - [ -5x + 6y] = 5x - 6y , every term inside the bracket goes out with opossite sign.
a numerical expression is just an expression without any equal or unequal signs, e.g. (a+2b)c or 5x-6y an equation shows two expressions with an equal sign, e.g. (a+2b)c = 53 or 5x-6y = 3k2-7k+21