How do you combine $7 (a + 2 b) - 6 b + 2 a$ $7( a + 2b ) - 6b + 2a$ ?

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Answer 1 · 2017-10-07T04:49:15

$9 a + 8 b$ $9a+8b$

$7 (a + 2 b) - 6 b + 2 a = 7 a + 14 b - 6 b + 2 a$ $7(a+2b)-6b+2a=7a+14b-6b+2a$
$= (7 a + 2 a) b (14 - 6) = 9 a + 8 b$ $=(7a+2a)b(14-6)=9a+8b$

Answer 2 · 2017-10-07T04:54:35

$9 a + 8 b$ $9a+8b$

Multiply through parenthesis by 7
$7 a + 14 b - 6 b + 2 a$ $7a+14b-6b+2a$
Collect the like terms
$9 a + 8 b$ $9a+8b$

How do you combine 7(a+2b)−6b+2a7( a + 2b ) - 6b + 2a ?