Curtains and bed cover

Grandma bought 16 3/4 meters of cloth. She uses 8 1/2 meters for curtains and 7 1/2 meters for bed covers. How many meters of clothing were not used?

Correct answer:

x =  3/4 m

Step-by-step explanation:

a=1643=16+43=416 4+3=464+3=467=16.75 m b=821=8+21=28 2+1=216+1=217=8.5 m c=721=7+21=27 2+1=214+1=215=7.5 m  u=b+c=217+215=217+15=232=16 m  x=au=46716=467416 4=467464=46764=43=43 m=0.75 m

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