algebra
posted by ina on .
solve by the elimination method:
7r9s=4
9r+7s=98

multipy the first equation by 7, and the second equation by 9.
Then add the equations
posted by ina on .
solve by the elimination method:
7r9s=4
9r+7s=98
multipy the first equation by 7, and the second equation by 9.
Then add the equations