Ron used 3/5kg of flour to make bread and 2/7kg of flour to make scones how many more kg of lour did he use to make bread than scines

Subtract them...

But to subtract fractions you need a common denominator (the smallest thing that 5 and 7 both go into)
Remember when making equivalent fractions with your common denominator (which is 7x5 = 35) make sure you multiply the top by whatever you multiplied the bottom by...
So 3/5 is equal to 3x7/5x7
that is
21/35
now you try...

To find out how many more kilograms of flour Ron used to make bread than scones, we need to subtract the amount of flour used to make scones from the amount used to make bread.

Amount of flour used to make bread = 3/5 kg
Amount of flour used to make scones = 2/7 kg

Subtracting 2/7 kg from 3/5 kg, we get:

(3/5) - (2/7)

To subtract these fractions, we need to find a common denominator. The common denominator of 5 and 7 is 35.

(3/5) * (7/7) - (2/7) * (5/5)
= (21/35) - (10/35)

Now we can subtract these fractions:

(21/35) - (10/35) = 11/35

Therefore, Ron used 11/35 kg more flour to make bread than scones.

To find out how many more kilograms of flour Ron used to make bread than scones, we need to subtract the amount of flour used for scones from the amount used for bread.

Ron used 3/5 kg of flour to make bread and 2/7 kg of flour to make scones.

To subtract these fractions, we need to find a common denominator.

The least common multiple (LCM) of 5 and 7 is 35.

Now, let's express the fractions with the common denominator of 35:

3/5 kg of flour for bread = (3/5) * (7/7) kg of flour = 21/35 kg of flour
2/7 kg of flour for scones = (2/7) * (5/5) kg of flour = 10/35 kg of flour

Subtracting the fractions, we get:

(21/35) - (10/35) = 11/35 kg of flour.

Therefore, Ron used 11/35 kg more flour to make bread than scones.