How do you solve #x - 1/2 = 1 1/4#?
Rewrite the equation.
In order to add or subtract fractions, the denominators must be the same. In this case the least common denominator (LCD) is
First, make the mixed fraction into improper fraction,
Add 1/2 on both sides
LCM is 4
Sometimes fractions and decimals are easy if you think of them as money.
Thinking of it as money, the question says:
1) You have a certain amount of money which is called
2) You spend a half a dollar (two quarters), written as
3) You end up with one dollar and one quarter
$ . . . minus . . . 50ȼ . . .
Maybe you already know the answer without doing any math.
You spend 50ȼ and end up with $1.25.
How much did you have to start?
You must have started with "$1 and 3 quarters" ($1.75)
because spending "2 quarters" (half a dollar)
leaves you with "$1 and one quarter." ($1.25)