Algebra Like Terms and Evaluating Expressions

If a = -4, b = 16, and c = -2, evaluate the expression 21abc.

• 214162

• -2688

• 2688

• 31

2x -11 - 6x

• 8x - 11

• -4x - 11

• -15x

• -12x - 11

If a = -4, b = 16, and c = -2, evaluate the expression -3a + 2c - 6b.

• -88

• -560

• 300

• 3422616

Simplify 3n + 7 - 6 - 2n

• 5n + 13

• n + 13

• n + 1

• 2n

If x = 2, y = -3, and z = 1, evaluate the expression -xyz.

• -6

• 6

• 0

• 7

Simplify 11n - 7n

• -18n

• -4n

• 18n

• 4n

Simplify 3n - 1 - 6

• 3n - 7

• -4n

• 3n + 5

• -3n + 7

Simplify 5n - 3(6 + 7n)

• 12n - 18

• -16n - 18

• 15n

• 19n

Simplify 4 - 7(-1 + 3m)

• -21m + 11

• 9m + 3

• -m

• 33m -11

Simplify 9(-6m + 3) - 6(-1 - 4m)

• -78m + 21

• -11m

• 5m + 5

• -30m + 33