Linear function

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

Correct answer:

B =  13 mi

Step-by-step explanation:

L=7+B L=20 mi  B=L7=207=13 mi

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