Solve the following sysytem of linear equations using matrix method :- `5x + 2y = 4`
`7x + 3y = 7`.

Solve the following pair of linear equations by the substitutation method: (i) x+y=14 , x-y=4

Solve the following pair of linear equations by the substitution method: (iii)3x-y=3 ,9x-3y=9

Solve the following pair of linear equations by the elimination method:(iv) x/2+(2y)/3=-1 and x-y/3=3

Solve the following pair of linear equations by the substitution method: (iv)0.2x+0.3y=1.3 ,0.4x+0.5y=2.3

Solve the following pair of linear equations by the substitution method: (v) sqrt2x+sqrt3y=0 sqrt3x-sqrt8y=0