Answer:

1. 6x + 8; x = 2

2. 4x-9; x = -7

3. 8y +2x; x = -1; y = -3

4. -4(a + b); a = 2; b = 3

5. 2x+ 5; x = -3

Answer:

1. 20

2. -31

3. -22

4. -14

5. -11

Verified answer

Answer:

1. 20

2. -37

3. -26

4. -20

5. -1

Step-by-step explanation:

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1. 6x + 8 ; x = 2

We just insert the "2" in variable "x".

6(2) + 8 = 12 + 8 = "20"

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2. 4x - 9 ; x = -7

Just like in previous algebraic expression. Insert the value of "x".

4(-7) - 9 = -28 - 9 = "-37"

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3. 8y + 2x ; x = -1 , y = -3

Distribute the value of variables to its corresponding variables.

8(-3) + 2(-1) = -24 - 2 = "-26"

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4. -4 ( a + b ) ; a = 2 , b = 3

Just like in previous problem, insert the value of each variable to its corresponding variables.

-4 ( 2 + 3) = -4 (5) = "-20"

-4 ( 2 + 3) = -4 (5) = "-20"or

-4 ( 2 + 3) = -4 (5) = "-20"or-4 ( 2 + 3) = -8 - 12 = "-20"

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5. 2x + 5; x = -3

2(-3) + 5 = -6 + 5 = "-1"