Question

solve the equation:
x + 21 = 20​

Answer 1

Answer:

$x = - 1$

Step-by-step explanation:

$x + 21 = 20$

$x = 20 - 21$

$x = - 1$

Answer 2

thє єquαtíσn "х + 21 = 20" ís nσt pσssíвlє.

ʙᴇᴄᴀᴜsᴇ ɪғ ᴡᴇ ғɪɴɢᴇʀs ᴛʜᴇ ᴠᴀʟᴜᴇ ᴏғ x ᴛʜᴇ ᴀɴsᴡᴇʀ ᴡɪʟʟ ʙᴇ 1, ʙᴜᴛ "1 + 21 = 20" ɪs ɴᴏᴛ ᴘᴏssɪʙʟᴇ.

σr thє quєstíσn cσuld вє wrσng.

ít cσuld вє " х + 20 = 21"

or we can solve like this:

$\tt{x=−1}$

$\tt{x + 21 = 20x+21=20}$

$\tt{x = 20 - 21x=20−21}$

$\tt{x = - 1x=−1}$