Solve the following `6+7/9`

Solve the following. 7=4x-9

Solve the following: (a) 7 3/7 / 7

7) Solve the following 7/4+3/4

Solve the following: 7.5-3.6-(3.9-6.3)

Solve the following system of equations: x/7+y/3=5,\ \ \ x/2-y/9=6

Solve the following linear inequation: \ 7x+9> 30

Solve the following system of equations: x/6+y/3=5,\ \ \ x/2-y/9=6

Solve the following system of equations: 2x-3/y=9,\ \ \ \ 3x+7/y=2,\ y!=0

Solve the following pair of linear equatio: 3x-5y-4=0 9x=2y+7

Solve the following paris of linear (simultaneous) equation using method of elimination by substution: 6x = 7y + 7 7y - x = 8