Pair of Linear ...

Find the value of a and b using substitution method:
$$a + b = 3$$ and $$-3a + 2b = 1$$

Solve the equations using the method of substitution method :
$$3x+4y=-43$$ and $$-2x+3y=11$$

Solve the equations using graphical method: $$2x-  y = 2$$ and $$-4x-  y = -4$$

Solve the equations using graphical method: $$x + y = 1$$ and $$2x -3y = 7$$

Solve the following equations using substitution method:
$$2x+3y=13$$  and $$4x+5y=23$$

Solve the equation using substitution method:
$$3x+y+1=0$$  and  $$3x-4y=10$$ 

Solve the equation using elimination method:
$$\displaystyle \frac{3}{x}+\frac{2}{y} = 7$$ and $$\displaystyle \frac{4}{x} -\frac{1}{y}=2$$

Solve the equation using substitution method:
$$x+y=-3$$ and $$x+2y=4$$

Solve the equations using graphical method: $$x + y = 7$$ and $$2x - 3y = 9$$

Solve the equation using substitution method:
$$4x-6y=-4$$  and  $$8x-2y=48$$