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Select "equivalent" or "not equivalent" for each pair of expressions.

1. [tex]\(5x - 7 + 3x\)[/tex] and [tex]\(3x - 7 + 5x\)[/tex]
- equivalent
- not equivalent

2. [tex]\(4y + 9 + 3y\)[/tex] and [tex]\(3y + 9 + 4y\)[/tex]
- equivalent
- not equivalent

3. [tex]\(6z - 2z + 4\)[/tex] and [tex]\(4 + 2z - 6z\)[/tex]
- equivalent
- not equivalent


Sagot :

Let's analyze each pair of expressions to determine if they are equivalent or not equivalent:

1. Expressions: [tex]\(5x - 7 + 3x\)[/tex] and [tex]\(3x - 7 + 5x\)[/tex]

To determine if these expressions are equivalent, we simplify both:

[tex]\[ 5x - 7 + 3x = (5x + 3x) - 7 = 8x - 7 \][/tex]

[tex]\[ 3x - 7 + 5x = (3x + 5x) - 7 = 8x - 7 \][/tex]

Since both simplified expressions are [tex]\(8x - 7\)[/tex], these expressions are equivalent.

2. Expressions: [tex]\(4y + 9 + 3y\)[/tex] and [tex]\(3y + 9 + 4y\)[/tex]

Simplify both expressions:

[tex]\[ 4y + 9 + 3y = (4y + 3y) + 9 = 7y + 9 \][/tex]

[tex]\[ 3y + 9 + 4y = (3y + 4y) + 9 = 7y + 9 \][/tex]

Since both simplified expressions are [tex]\(7y + 9\)[/tex], these expressions are equivalent.

3. Expressions: [tex]\(6z - 2z + 4\)[/tex] and [tex]\(4 + 2z - 6z\)[/tex]

Simplify both expressions:

[tex]\[ 6z - 2z + 4 = (6z - 2z) + 4 = 4z + 4 \][/tex]

[tex]\[ 4 + 2z - 6z = 4 + (2z - 6z) = 4 - 4z \][/tex]

Since the simplified expressions are [tex]\(4z + 4\)[/tex] and [tex]\(4 - 4z\)[/tex], these expressions are not equivalent.

Based on the above analysis:

[tex]\[ \begin{array}{|l|c|} \hline \text{Expressions} & \text{Equivalent or Not Equivalent?} \\ \hline 5x - 7 + 3x \text{ and } 3x - 7 + 5x & \text{equivalent} \\ \hline 4y + 9 + 3y \text{ and } 3y + 9 + 4y & \text{equivalent} \\ \hline 6z - 2z + 4 \text{ and } 4 + 2z - 6z & \text{not equivalent} \\ \hline \end{array} \][/tex]