
Name: Sophia
Question:
what is 18m11+ 7 (m = to 12)?
Hi Sophia,
The expression 18m11+ 7 should be read
18 times m, minus 11, plus, minus 7.
Since m is 12 this is
18 times 12, minus 11, plus, minus 7.
1812 = 216 so this is
216, minus 11, plus, minus 7.
216  11 = 205 and if you add 7 to 205 you get 198.
I hope this helps,
Penny
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