Add or subtract the linear expressions 1: ( 7 + a ) - (-7a + 1 )

2: (-3k - 1 ) + ( 7 + 2k )​

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Aline passes through 3,7 and 6,9 what equation represents the line

Ten members of balin's soccer team ran warm ups for practice. each member ran the same distance. their combined distance was 5/6 of a mile. to find the distance that each member ran, balin wrote the expression below.