Pair of Linear ...

If $$x=a, y=b$$ is the solution of the equations $$x-y=2$$ and $$x+y=4$$, then the values of $$a$$ and $$b$$ are, respectively:

The ages of Hari and Harry are in the ratio $$5:7$$. If four years from now, the ratio of their ages will be $$3:4$$, then the present age of

Solve for $$x$$ and $$y$$:
$$4x+\dfrac{6}{y}=15 $$ ; $$3x-\dfrac{4}{y}=7$$

Suresh is half his father's Age. After $$20$$ years, his father's age will be one and a half times the Suresh's age. What is his father's age now?

Solve the systems of equations:

The values of x and y satisfying the two equations $$32x + 33y = 31$$, $$33x + 32y = 34$$ respectively will be

Solution of the equations $$\cfrac{x + 3}{4} + \cfrac{2y + 9}{3} = 3$$ and $$\cfrac{2x - 1}{2} - \cfrac{y + 3}{4} = 4 \cfrac{1}{2}$$ is

If $$(3)^{x + y} = 81$$ and $$(81)^{x - y} = 3$$, then the values of $$x$$ and $$y$$ are

If $$\left (x+y,1 \right )$$  $$=$$  $$\left (3,y-x \right )$$, then $$x$$  $$=$$          , $$y$$  $$=$$         

If $$\displaystyle \frac{3}{x}- \frac{2}{y} =5$$ and $$\displaystyle \frac{4}{x} - \frac{5}{y} = 2$$, then $$\displaystyle \frac{1}{x} - \frac{1}{y} =?$$