Pre-Algebra Examples

$7 a - 4 b + 5 c$ , $- 7 a + 4 b - 6 c$

Step 1

Add the expressions.

$7 a - 4 b + 5 c - 7 a + 4 b - 6 c$

Step 2

Combine the opposite terms in $7 a - 4 b + 5 c - 7 a + 4 b - 6 c$ .

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Step 2.1

Subtract $7 a$ from $7 a$ .

$- 4 b + 5 c + 0 + 4 b - 6 c$

Step 2.2

Add $- 4 b + 5 c$ and $0$ .

$- 4 b + 5 c + 4 b - 6 c$

Step 2.3

Add $- 4 b$ and $4 b$ .

$5 c + 0 - 6 c$

Step 2.4

Add $5 c$ and $0$ .

$5 c - 6 c$

Step 3

Subtract $6 c$ from $5 c$ .

$- c$