You could subtract 4.53x from 7.21x and have 2.68x+1.12
1 KG = .001 metric tons. Move the decimal point over three to make it 48.567 metric tons.
X is equal to 4
Because RS + ST=RT
So basically x+3x=5x-4
4x=5x-4
-4x -4x
-1x=-4
x=4
In this situation, it is similar to a coin flip, so think about flipping a 2 sided chip, one side colored yellow the other blue, flipping the chip will result in a 50/50 chance for it to land on either side, so no matter how many times you flip it it will always be a 1/2 chance of it being on one of the sides
Joe is 15, 45-15=30 30/2=15
