Question

Saheed sawed a piece of wood 4/5 meters long from a piece 2 1/2 meters long. How much wood was left over?
Ans=1 7/10
9+5÷10
=14÷10
=5+14÷10
=1 7/10
I don't know how to do this one , please can you help me
2 1/2 = 2 + 1 / 2 = 2 + 0.5 =

2.5 = 25 / 10

4 / 5 = 2 • 4 / 2 • 5 = 8 / 10

2 1/2 - 4 / 5 = 25 / 10 - 8 / 10 =

17 / 10 = 10 / 10 + 7 / 10 =

1 + 7 / 10 = 1 7/10

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