find the additive inverse using the property of -1?
additive inverse means you add the opposite so a+b+cx then -a+-b+-c-x which is also -a-b-c-x hope this helps!
Using proper techniques nothing is hard. When working with any satin I use paper between the pieces of fabric and under them. It tears off really easy and keeps the fabrics from walking and puckering.
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I was asking myself about this too