Simplify 12e − 5f − 7e +3f

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12e - 5f - 7e + 3f can be simplified as:

(12e - 7e) + (-5f + 3f)

Combining like terms:

5e - 2f

Simplify 9x + 3y − 6 − 5x + 4y −3

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9x + 3y - 6 - 5x + 4y - 3 can be simplified as:

(9x - 5x) + (3y + 4y) - (6 + 3)

Combining like terms:

4x + 7y - 9

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To simplify the expression 12e - 5f - 7e + 3f, let's combine like terms.

We have 12e - 7e = (12-7)e = 5e
And -5f + 3f = (-5+3)f = -2f

Therefore, the simplified expression is 5e - 2f.

To simplify the expression 12e - 5f - 7e + 3f, you can combine the like terms. Like terms are terms that have the same variables raised to the same powers.

In this case, the terms 12e and -7e have the same variable, 'e', raised to the first power, so they can be combined. Similarly, the terms -5f and 3f have the same variable, 'f', raised to the first power, so they can also be combined.

Combining the like terms, we have:

(12e - 7e) + (-5f + 3f)

Simplifying further, we have:

5e - 2f

So, the simplified expression is 5e - 2f.