Using

Using one of the following forms x+p=q or px=q write an to represent these problems using x as the unknown variable

Larry ran 7 more miles than Barry in a month, if Larry ran 20 miles how many did Barry run?

Result

B =  13 mi

Solution:

$L=7+B \ \\ L=20 \ \text{mi} \ \\ \ \\ B=L-7=20-7=13 \ \text{mi}$

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