7 checkpoint 3; 7.af.1

Front

Enter the value of n so that the expression (−y + 5) + (7y − 9) is equivalent to (ny − 4).

Back

3

Front

Enter the value of n so that the expression −y + 5.3 + 7.2y − 9 is equivalent to 6.2y + n.

Back

n = -3.7

Front

Which property is demonstrated by the expression shown? 2x + 6 − 3x + 2 = 2x − 3x + 6 + 2

Back

Commutative property

Front

Simplify using distributive property: -4(3x - 7)

Back

-12x + 28

Front

Simplify the expression: 5x + ½ (4x - 8)

Back

7x - 4

Front

Identify and correct the error in the expression: -3(x - 2) is equivalent to -3x - 2.

Back

The student did not find the product of -3 and -2; the equivalent expression is -3x + 6.

Front

Simplify the expression: (2.1x + 4.3) – (–3x – 7).

Back

5.1x + 11.3

Front

Simplify the expression: (3x + 2) + (–6x + 3)

Back

-3x + 5

Front

Back

Front

An expression is given: 3x + 5(–4x + 12) – (x – 3). Which of the following are equivalent expressions by applying the properties of operations? Options: 3x - 20x + 60 - x + 3, 3x - 20x + 60 - x - 3, 3x - 20x + 60 + x - 3, 3x + 20x - 60 - x + 3

Back

3x - 20x + 60 - x + 3