
Here is how:
One horse =10
One horse shoe =2
One boot =1
We then need to evaluate the value of the boot plus (horse × horseshoe). This is 1 + 10 × 2 = 1 + 20 = 21.
(The 10 × 2 is evaluated first by the order of operations because multiplication takes precedence over addition).
Congrats if you got 21
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