`y-3/y=1/2`

(b) Given Sara's age today to be y years. Think of her age in the future or in the past. What will the following expression indicate? Y+7,y-3,y+4ꟷ1/2,y-2ꟷ1/2.

Solve : (y+2)/(4)-(y-3)/(3)=(1)/(2)

A triangle has vertices A_i(x_i , y_i)fori=1,2,3 If the orthocentre of triangle is (0,0), then prove that |x_2-x_3y_2-y_3y_1(y_2-y_3)+x_1(x_2-x_3)x_3-x_1y_2-y_3y_2(y_3-y_1)+x_1(x_3-x_1)x_1-x_2y_2-y_3y_3(y_1-y_2)+x_1(x_1-x_2)|=0

A triangle has vertices A_i(x_i , y_i)fori=1,2,3 If the orthocentre of triangle is (0,0), then prove that |x_2-x_3y_2-y_3y_1(y_2-y_3)+x_1(x_2-x_3)x_3-x_1y_2-y_3y_2(y_3-y_1)+x_1(x_3-x_1)x_1-x_2y_2-y_3y_3(y_1-y_2)+x_1(x_1-x_2)|=0

Solve: (y-1)/(3)-(y-2)/(4)=1

Solve: (y-1)/3-(y-2)/4=1

Solve the following equations. (y-1)/3-(y-2)/4=1

(4y+1)/(3)+(2y-1)/(2)-(3y-7)/(5)=(47)/(10)