Algebra Examples

$10 b - 7 a + (- b) + 10 a - 9 b + 5$

Step 1

Remove parentheses.

$10 b - 7 a - b + 10 a - 9 b + 5$

Step 2

Subtract $b$ from $10 b$ .

$- 7 a + 9 b + 10 a - 9 b + 5$

Step 3

Combine the opposite terms in $- 7 a + 9 b + 10 a - 9 b + 5$ .

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Step 3.1

Subtract $9 b$ from $9 b$ .

$- 7 a + 10 a + 0 + 5$

Step 3.2

Add $- 7 a + 10 a$ and $0$ .

$- 7 a + 10 a + 5$

Step 4

Add $- 7 a$ and $10 a$ .

$3 a + 5$