If A=x-1A=x−1 and B=x+2,B=x+2, find an expression that equals 3A-3B3A−3B in standard form.

A = x - 1

3A = 3 * (x - 1) = 3x - 3

B = x + 2

3B = 3*(x + 2) = 3x + 3*2 = 3x + 6

3A - 3B = 3x - 3 - (3x + 6) = 3x - 3 + 3x*(-1) - 6*(-1)

            = 3x - 3 -3x - 6

            = 0 - 9

4

step-by-step explanation:

6 (donuts) divided by 3 is 2.

so 2/3 means 2 times 2, which is 4/6.

you get two and your friend gets four.

3. (5x + 1) - (-10x + 6)

simplify the answer choice. combine like terms. remember to distribute the negative to the terms inside the second parenthesis. also remember that two negatives = one positive, and one of each sign = negative.

- (-10x + 6) = + 10x - 6

simplify. combine like terms:

5x + 1 + 10x - 6

5x + 10x + 1 - 6

15x - 5

∴ it is your answer

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