How do you combine $7x + 11- ( - 5x + 2)$ ?

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Answer 1 · 2017-08-31T10:30:09

$12x + 9$

$7x + 11 - (- 5x + 2)$

First is to eliminate the brackets!

$7x + 11 + 5x - 2$

What is done above is the general terms with the symbols..

General terms..

If the signs are the same, but they are either, multiplied or divided then the sign changes;

Explanation..

$- xx - = +$

$- xx + = -$

$+ xx - = -$

$+ xx + = +$

or

$- div - = +$

$- div + = -$

$+ div - = -$

$+ div + = +$

Hence we have $7x + 11 + 5x - 2$

Collect like terms

$7x + 5x + 11 - 2$

$12x + 9$

How do you combine 7x + 11- ( - 5x + 2)7x + 11- ( - 5x + 2)?