Answer:
9x-3-&r=7-X
Taking 7 to the left side of the equation,we have
9x-3-&r-7=-X
Multiplying through by -1 we have -1(9x-3-&r-7)=-1(-X)
which is -9x+3+&r+7=X
Therefore X= 7+&r+3-9x
