Question

6.) $5 - 3x$ if $x = -2$

8.) $3x + 4 - 8y$ if $x = -3$ and $y = 1$

Explanation:

Problem 6:

Step1: Substitute \( x = -2 \) into \( 5 - 3x \)

Substitute \( x=-2 \) into the expression: \( 5 - 3(-2) \)

Step2: Simplify the expression

First, calculate \( -3(-2)=6 \), then \( 5 + 6 = 11 \)

Step1: Substitute \( x = -3 \) and \( y = 1 \) into \( 3x + 4 - 8y \)

Substitute the values: \( 3(-3)+4 - 8(1) \)

Step2: Simplify each term

Calculate \( 3(-3)=-9 \), \( 8(1) = 8 \), so the expression becomes \( -9 + 4-8 \)

Step3: Combine the terms

First, \( -9 + 4=-5 \), then \( -5-8=-13 \)

Answer:

\( 11 \)

Problem 8: