Answer:
x=11
Explanation:
the ratio of 6:5 is 1.2 and you can do that by dividing 6 by 5
after that add 48 and 6 which is 54.
54/1.2 is 45 and then
45 = 3x + 7 + 5
45 = 3x + 12
subtract 12 on both sides you get 33 = 3x
divide 3 on both sides and you get x = 11