How do you combine like terms in $(5 a - 9 b - 2 c) + (c - 7 b - 3 c)$ $(5a - 9b - 2c ) + ( c - 7b - 3c )$ ?

Question

2847 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2018-06-13T16:06:11

$5 a - 16 b - 4 c$ $5a - 16b - 4c$

$(5 a - 9 b - 2 c) + (c - 7 b - 3 c) =$ $(5a - 9b - 2c) + (c-7b -3c) =$

Step 1: combine the $a$ $a$ terms

$5 a$ $5a$
(No other $a$ $a$ terms)

$= 5 a$ $=5a$

Step 2: combine the $b$ $b$ terms

$- 9 b - 7 b = - 16 b$ $-9b-7b=-16b$

Step 3: combine the $c$ $c$ terms

$- 2 c - 3 c + c = - 4 c$ $-2c-3c +c = -4c$

Step 4: Put your answers together

$= 5 a - 16 b - 4 c$ $= 5a-16b-4c$

Answer 2 · 2018-06-13T16:09:26

$5 a - 16 b - 4 c$ $5a-16b-4c$

Writing
$5 a - 9 b - 7 c - 2 c + c - 3 c = 5 a - 16 b - 4 c$ $5a-9b-7c-2c+c-3c=5a-16b-4c$

How do you combine like terms in (5a−9b−2c)+(c−7b−3c)(5a - 9b - 2c ) + ( c - 7b - 3c )?