Question

symbols ___,___and___can both added and subtracted

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Answer 1

Step-by-step explanation:

ᴛʜᴇ sʏᴍʙᴏʟ x ᴄᴀɴ ʙᴇ sᴜʙᴛʀᴀᴄᴛᴇᴅ ᴏɴʟʏ ғʀᴏᴍ ʟ ᴀɴᴅ ᴄ. ᴛʜᴇ sʏᴍʙᴏʟ ᴠ ᴄᴀɴɴᴏᴛ ʙᴇ ʀᴇᴘᴇᴀᴛᴇᴅ ᴏʀ sᴜʙᴛʀᴀᴄᴛᴇᴅ. ᴡᴇ ᴅᴏ ɴᴏᴛ ʀᴇᴘᴇᴀᴛ ᴠ ᴛᴡɪᴄᴇ ᴛᴏ ɢᴇᴛ 10.ᴡᴇ ᴀʟʀᴇᴀᴅʏ ʜᴀᴠᴇ ᴀ sʏᴍʙᴏʟ ғᴏʀ 10

Answer 2

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The symbol X can be subtracted only from L and C.

The symbol V cannot be repeated or subtracted. We do not repeat V twice to get 10. We already have a symbol for 10.