2-2(3x-y)=10(4-y)-5x=4(y-x)

Simplify the following:(x-2y) (y-3x)+(x+y) (x-3y)- (y-3x)(4x-5y).

3x-4y=10 , 4x+3y=5

(10)/(x+y)+(2)/(x-y)=4,(15)/(x+y)-(5)/(x-y)=-2

If (3x -4y) : (2x -3y) = (5x -6y) : (4x -5y) , find : x : y .

Solve the simultaneous equations : 10/(x+y) + 2/(x-y) = 4, 5/(x+y) -5/(3(x-y)) = (-2)/3

Find the value of x:y, if (8x-10y)/(3x+4y) = (4)/(5) .

Classify the following pairs of lines as coincident, parallel, perpendicular or intersecting : (i) 6x+14y-16=0 , 12x+28y-32=0 (ii) 3x-4y=8 , 3x+4y=11 (iii) 5x-2y=7 , 2y-5x=-7 (iv) 4x+7y=19 , 7x-4y=-2 (v) x-2y=7 , 4y-2x=13

Divide: 3y^(4)-3y^(3)-4y^(2)-4y^(2)-4y-byy^(2)-2y2y^(5)+10y^(4)+6y^(3)+y^(2)+5y+3by2y^(3)+1x^(4)-2x^(3)+2x^(2)+x+4byx^(2)+x+1