1/2x-9=11
1/2x-9=11
ADD 9 TO BOTH SIDES:
1/2x=20
DIVIDE BOTH SIDES BY 1/2:
x=40
(Dividing a number by 1/2 is the same as multiplying it by 2)
ADD 9 TO BOTH SIDES:
1/2x=20
DIVIDE BOTH SIDES BY 1/2:
x=40
(Dividing a number by 1/2 is the same as multiplying it by 2)